1900 marks the year of the 5th world exhibition in Paris. The Eiffel tower, built for the 4th exhibition in Paris remains the iconic attraction despite the new architecture that is added to Paris as the Petit and Grand Palais as well as the 1st Metro line. Art Nouveau style adds to already impressive architecture in and around Paris. With the planning horizons of several years in advance of events, urban planning with all its facets of urban infrastructure and architecture becomes much of a defining scientific discipline for decades and for most of the time of the century. Grand urban architecture and design constitute just another form of competition between nation states. Most of them want to show off their imperialist acquisitions and, what they define as “curiosities” at the time.
Habib (2005, pp.502) singles out Arthur Schopenhauer and Friedrich Nietzsche as “heterological thinkers” who coin major thoughts in the late 19th century that shall influence the beginning of the 20th century right from the year 1900 onwards. “The world should be formed in your image by your reason, your will, and your love! And truly, it will be to your happiness you enlightened men!” (Nietzsche. Thus spoke Zarathustra 1978, p.110). In retrospect from the 21st century we shall doubt this overly positive approach to human intentions and their will to form the world according to their abstracting ideas only. Tensions between technology and society became visible and it took many decades before society became conscious that it is up to society to choose technologies they preferred.
The planning for the Brussel Expo 1910 started right after the previous Expo 1905 in Liège. Protests in Brussels accompanied already the choice of terrain for the Expo, but the governors and shareholders of the enterprise decided 1906 for a site near the “forêt de Soignes”, where trees had to be cut for access to the construction site and for future visitors under local protest. Women workers were present to exhibit the low pay of women in industries. Child labour was documented with shocking images. Around the globe labour movements started to raise attention. In the U.S. the National Women’s Trade Union League (1903) was founded as well as the National Child Labor Committee (1904). “Bloody Sunday” in St. Petersburg (1905) saw the killing of peaceful protestors in front of the Zsar’s palace, which ignited the Russian Revolution of 1905 and the creation of the Russian Parliament. Some of these issues (child labor) keep returning to our social agenda well into the 21st century.
Einstein’s publication of the theory of special relativity (1905) as well as challenges from social philosophy reflects the huge discrepancy between advancement of the sciences and the living conditions of the masses. Social theories and science advances foreshadow the violent turbulence throughout the 20th century.
(Sources: (1) Max Welch Guerra et al. (2023). European Planning History in the 20th Century: A Continent of Urban Planning. Routledge. (2) St. James Encyclopedia of Labor History Worldwide: Major Events in Labor History and Their Impact, Neil Schlager (2004). (3) Images from I. Van Hasselt(1980) Bruxelles Expo 1910: l’incendie / de brand. J Stevens. 
Construction
Construction as an industrial sector was growing strongly in the last decade. Corona crises, supply chain disruptions have slowed growth in the last two years, but the sector was still growing in terms of employment. The topic of skill and employee shortages hardened from year to year. In March 2023 the sector has more time to reflect on the somehow rapid, if not sometimes chaotic growth of the previous decade. The macro-economic scenario has changed now. Following on supply chain disruptions, we saw the high inflation rates of raw materials. The war of Russia against Ukraine caused energy prices to soar and eventually come down again. Latest worry is the increase in interest rates to finance construction projects of public, private and the business sector.
The whole sector is known for its economic role of forerunner of economic cycles, up or down. So, what are the prospects? Not so rosy, as the experts explain for example on the expert forum of the Belgian construction forum. The official from the Belgian National Bank announced a rather bleak outlook for the sector. New construction is stalling, but the renovation of buildings, especially for the purpose of reducing energy consumption is still strong and growing. Long-term reduction of emissions keeps the sector busy, thanks to the EU green deal in my opinion. The public, private and business investments in buildings all keep growth from turning negative. 2 big worries remain: (1) skill shortages and the lack of employees signalled in job openings in the sector is high and still rising; (2) the scarcity of women employed in the sector is still trailing most other sectors. Most companies have seen earnings grow over the last decade, sufficient time to build up reserves for the tougher quarters to come. Skill shortages and gender biases are harder to overcome. The Construction Forum in Brussels addressed both topics and tries to convince employers and the younger generation. Construction companies have to work on their male-dominated image was one of the take home messages Hélène de Troostemberg, the Director of Build Up pronounced.
It is not certainly not enough to have a woman as moderator of a panel and an all-female singers group accompanying the presentations. Women as architects, technicians and builders will make the sector even more attractive for the next generation of men as well. Aging of employees in the sector is another tough issue waiting for innovative solutions. Digitalisation of every step in the value chain is an additional necessary step. The leadership and trade unions in the sector are well aware of these facts. Maybe next year women engineers will pilot the robotics demonstration rather than being in charge of building a nice atmosphere with their songs. I must admit I liked the intro song to the Forum: “We build this city on rock ‘n role”, but I am less sure whether rock ‘n role will solve the gender and recruiting issue of the sector. However, naming and framing the problem(s) is already part of the solution.
Spring2023
Spring has sprung, a little bit early in 2023. On the 16th of March in the vicinity of Paris, where Caillebotte designed his impressionist garden. It is still 4 weeks until Easter. The spring flowers will hardly survive until then. Hence, we prepare for an early summer, nice because of less heating, but the vegetation is suffering in the region due to the lack of rain. Hay fever for millions of persons will start early this year as well. The damages from a fire in the nearby forest “Sénart” from 2018 have still not really disappeared. It is expensive and needs a lot of workers, equipment and knowhow to avoid the same old mistakes of planting mono-cultures of trees again. When will they ever learn, when will they ever learn.
Patient
The pandorra’s box is wide open. With ChatGPT applications the discussion has started to use it for more medical applications. As for much research having assistants to support you in routine tasks in your research is a standard procedure. Now the medical profession is also discussing the use of ChatGPT for the boring and time-consuming task to draft reports. The first study, published in the Lancet Digital Health, evaluates in a preliminary form the patient-sensitive form of communication between clinics and patients. Beyond chatbots, which organise information from calling persons, the obvious application is the use of ChatGPT to draft patient clinic letters. The example in the study is the skin cancer reporting. Lengthy reporting back to patients of lots of “hot and cold spots” might be done by AI with sufficient reliability. All depends on the correctness of the data base, the screening and samples taken. The communication between clinic and patient can then focus on other issues. ChatGPT just like neuroflash has its strength in being able to control for the “level” of the language. In addition to the choice of the output language it is possible to use, as it is required in the U.S., an average understanding level of patients. In other words, easy language rather than medical expert language is an option or even a requirement. Anecdotal evidence and the PISA for adults studies show how difficult it can be to talk the same language even if you talk the same language. There is ample scope for improvement and ChatGPT or neuroflash for German applications of AI are prime candidates to fill this gap in clinic patient communication. Considering that our mobile phones (can) do already most of the scanning of skin cancer dots and AI is used in pre-scanning the images and recommends to consult medical expertise, the next step to improve health delivery seems feasible. Whereas the statistical analysis explains 62% of “median humanness”, the score of 37% of explained variance of median correctness is a surprise as the basis of the model to explain deviation from correctness should be as low as possible. Medical data, like many other data, is not simply binary. The way forward is most likely relying on a “human-in-the-loop” approach for some time. A limited human input might reassure many patients as well.
Source: Stephen R Ali, Thomas D Dobbs, Hayley A Hutchings, Iain S Whitaker (2003). Using ChatGPT to write patient clinic letters. Lancet Digit Health 2023 https://doi.org/10.1016/S2589-7500(23)00048-1 
20s
In retrospect from the 1930s and in prospect from the 1910s, the 1920s may well be described as “The tumultuous Twenties”. Several other summary notions are attributed to the 1920s. “Les années folles” in the French speaking world, “The Jazz years” within the U.S. or the “Wild 20s” in Germany coined the decade after the disillusion of the 1st world war. The economic and cultural revival after the period of atrocities has seen thriving city centres and comparatively little economic hardship until the Wall Street crashed on October 24th in 1929 the so-called “Black Thursday”. The party was suddenly over and a lengthy economic crisis spread globally. It was within this free spirit of the 1920s that the Fascist counter movements of the 30s started to take roots.
The 20s saw the skyscrapers soar and the credit-financed speculation was at its highest. Pierre Boudon (1991, pp. 137) characterises the architecture of the 1930s as “l’inversion des signes”. The Bauhaus of the 1920s was later forced into emigration. The film of F. Lang “Metropolis” (1927) prolonged the constructivist lines of the 1920s to a haunting vision of big cities with its daunting acceleration of economic and cultural experiences.
Walter Benjamin later referred to the method of technical reproduction as one of the major foundations for the mass movements and mass culture, which turned the relatively prosperous early and mid 20s into the disastrous 30s. Indeed, many scholars combine the 20s and 30s into one historical period as the rise and decline between the 2 world wars of the 20th century.
Certainly in terms of economic development many countries witnessed a steep rise in prosperity in the 20s followed by deep recession in the 30s. What went up in spectacular terms in the 20s, economic development, democratic participation, came down in the next decade due the rise of Fascist movements.
100 years later in the 2020s we still struggle with many of the same issues. Poverty and “Existenzminimum” were topics of the 2nd International congress of modern architecture in 1929 in Frankfurt. This reflects the lasting need to address “social issues” throughout decades, if not whole centuries of mankind. 
Fukushima 12
12 Jahre nach der Kernschmelze im Atomkraftwerk der technologiebegeisterten Japaner stellt sich immer noch die Frage nach der Entsorgung der verstrahlten Reste und Kühlwassers. Laut eines Berichts und den veröffentlichten Bildern zu dem Kernkraftwerk Fukushima staunen wir über das weite verseuchte Umfeld und die riesigen Lagerstätten für den verstrahlten Abfall. Geothermie, Wasserkraft, Windkraft und Solarenergie könnten auf der Fläche sicherlich riesige Mengen von nachhaltigem Strom produzieren. Das hatte bis vor 13 Jahren niemand denken oder aussprechen dürfen. Heute nach 18.000 Toten und vielen Folgeschäden durch Krebs und geschädigtes Erbgut wird der Unsinn weitergehen. Da sind sehr starke Interessen am Werk, denen es nicht um Menschenleben geht. Atomkraft, koste es was es wolle. Die Einleitung eines Teils des verseuchten Wassers ins Meer ist wohl bereits erfolgt. Noch mehr wird folgen müssen. Über die Fische als Teil der Nahrungskette werden Menschen dann mehr Radioaktivität aufnehmen. Das war schon so mit den Pilzen nach Tschernobyl. Fukushima bleibt ein abschreckendes Beispiel weltweit, da helfen jetzt zum 12. Jahrestag ein paar Solarzellen als Trostpflaster wenig. (Bilder aus ARD Tagesschau 11.3.2023. Auch bei uns ist es leider schmal Glück gewesen, dass nichts Schlimmeres passiert ist (Link Radiobeitrag DLF 2023-4-17)
Aphorismen L3
“Was für Aussichten würden wir bekommen, wenn wir unser Kapital von Wahrheiten einmal von demjenigen entblößen könnten, was ihnen nicht sowohl wesentlich ist, als vielmehr aus der öfteren Wiederholung zuwächst.“ (Lichtenberg S. 50). Die Wiederholung ist eine starke Lernmethode. Sie wird seit Jahrtausenden erfolgreich eingesetzt. Alle Religionen bedienen sich am liebsten täglich dieser Methode, um sich der Treue der Anbetenden zu vergewissern. Der Glaube im Glauben ist: Oft genug wiederholt ist gut verinnerlicht. Dabei bleibt ein Glaube ein Glaube, selbst bei ständiger Wiederholung. Lediglich so manchem Mensch erscheint durch regelmäßiges Wiederholen die Botschaft als verinnerlichte Selbstverständlichkeit. Wahrscheinlich ist es beruhigender, sich nicht täglich zu fragen, ob das 1x,2x,3x mal tägliche Einmassieren von Chemikalien auf Zähne und Zahnfleisch wirklich nachhaltig gesundheitsfördernd ist. Alleine dem Markt wollen wir das Thema nun auch nicht überantworten. Warten wir weiterhin auf die nächste entblößende, hoffentlich wirklich unabhängige, wissenschaftliche Studie dazu. Mit den Pestiziden in der Ernährung hat das bekanntlich nur sehr bedingt funktioniert. Wie schön, dass alle Jahre wieder Frühling kommt und die finsteren Tage hinter uns lässt. Wiederholungen lassen Routinen entstehen, die uns das ständige Hinterfragen ersparen. Rasch gehen wir über Fragen von Kindern hinweg: Muss ich heute in die Schule gehen? Dabei ist Hinterfragen von Wiederholungen ein wichtiges Lernen, dem Mitläufertum entgegen zu wirken. 
Aphorismen L2
“Man soll öfters dasjenige untersuchen, was von den Menschen meist vergessen wird, wo sie nicht hinsehen und was so sehr als bekannt angenommen wird, dass es keiner Untersuchung mehr wert geachtet wird.“ (Lichtenberg S. 50). Eine eindrückliche Warnung sich nicht nur den großen Wellen und Wogen der Öffentlichkeit oder der Wissenschaften hinzugeben. Wo viele nicht hinschauen oder bewusst wegsehen, da gibt es meist einiges zu ergründen. Die Soziologie der kleinen Dinge, der Alltagsgegenstände bringt faszinierende Erkenntnisse hervor. Nehmen wir nur einmal die Bekleidung beim Kochen. Von der Kittelschürze zum gestylten Outfit für die Kochshow zum Gesellschafts-cooking“ haben sich Kleidungsstücke und Berufe in ihrer Funktionalität gewandelt. Dem Anlass entsprechend wird sich gekleidet. Kochen ist von den Hinterzimmern mancherorts ins Zentrum der Gesellschaft mutiert. Wertschätzung von Handwerk und delikate Zubereitung sollten Rekrutierung erleichtern. Bleibt nur noch die Arbeit drumherum. Einkaufen, Einräumen, Einweichen, Abtrocknen, Aufräumen. Die Arbeit geht uns nicht aus, sie verändert sich nur. Wertschätzung der kleinen Aktivitäten, desjenigen, „was von den Menschen meist vergessen wird, wo sie nicht hinsehen“ kann so aufschlussreich sein. Hinschauen und Verstehen lernen bleibt angesagt. Lichtenberg weiter: „Man frage sich selbst, ob man sich die kleinsten Sachen erklären kann; dieses ist das einzige Mittel, sich ein rechtes System zu formieren, seine Kräfte zu erforschen und seine Lektüre sich nützlich zu machen.“ Aphorismen können ein ganzes Forschungsprogramm auf den Punkt bringen und so die kleinsten Beiträge noch als nützlich erweisen. (Foto: Schreibatelier von George Sand in Nohant). 
Economic Narratives
Joseph Stiglitz (2003) provided a detailed description and interpretation of the economic history of the 1990s in his book on the roaring nineties. As a member of the Clinton Administration serving as a Chairman of the Council of economic advisers, he had first hand access to the information, debates about interpretations and conclusions drawn during the period. In the preface (2003, p.XII) he provides some of the lessons this work has provided him. “Today, the challenge is to get the balance right, between the state and the market, between collective action at the local, national, and global levels, and between government and non-governmental action. As economic circumstances change, the balance has to be redrawn. Government needs to take on new activities, and shed old ones. We have entered into an era of globalization in which the countries and peoples of the world are more closely integrated than ever before. But globalization itself means that we have to change that balance: we need more collective action at the international level, and we cannot escape issues of democracy and social justice in the global arena.” The surprising approach by Stiglitz, as a winner of the Sveriges Riksbank Prize, to present no data in tables or figures demonstrates the need for telling convincing stories beyond throwing images and shuffled data at your audience. However, this is probably only feasible once you won a quasi-Nobel prize to not lose credibility among economists. Nevertheless, the issue is larger. Stiglitz manages to address the much larger audience of non-economists who construct or constructed their own “collective memory” of the legacy of the nineties as the “global 90s”.
The narrative of the 1990s grossly neglected the value of the biosphere. Asymmetric information (his shared prize winning issue) was and is still used in the market of natural resources to keep polluting the planet and push ahead with careless deforestation. The Exxon case is just one piece in the puzzle of asymmetric information and misinformation. Misguiding economic narratives play a powerful role. Maybe we need to write more about the “roaring failures” of economics and public policies across several decades in the 20th century. (red dots = forests lost on our planet A early 2000s, and there is no planet B) 
90s
Summary terms for the 1990s range from the “global 90s”, the “roaring (again) nineties”, the “fabulous 90s” to the “gay 90s”. After the fall of the Berlin Wall, a new era of reaping the economic benefits of more peaceful times had started. Re-unification or unification of Germany could have unsettled the balance of power on the continent. However, a firm integration into the European project and the withering away of the Cold War on a more global scale allowed economic growth in many countries and even continents. Joseph E. Stiglitz claimed it was the world’s most prosperous decade even. The overly popular view that unrestricted market principles will allow for rapid growth reached huge crowds before the new limits to growth (which were the old ones) and rising imbalances (in trade and among different firm sizes) became clear later on. The outlook of “America in the global ‘90s”, written in 1989 is overly optimistic. Nevertheless, it describes fairly well the almost euphoric view at the beginning of the nineties. “World economic growth will strengthen in the 1990s. Democracy and free markets are on the upswing. U.S. will retain its lead in technology and world trade. Openness to foreign capital, goods, immigrants is key. Budget and trade deficits will continue downward. America is a strong nation getting stronger.” (Kiplinger and Kiplinger, 1989 p.1)
Ten years make a decade, but the retrospective analysis might not make for such a rosy overall image. In other fields of study, many saw the real societal changes in the 90s in the liberation of views on gender. Gay movements and queer studies are on the rise throughout these years. The realisation of “Genders” beyond the male – female, binary vision captures more global attention as well. “Education reform in the ‘90s” (Finn et al. 1992) start to focus more on “higher-order learning skills, expanded methods of student assessment” (Joseph Murphy 1992 p.13) in addition to interdisciplinarity, core curriculum, original source materials and teacher choice. Diversification is high on the agenda, despite slow progress in social matters and high unemployment in many countries at the beginning of the 90s. Capture the peace dividend wherever it seems possible. Rapid globalization was the panacea of the decade; before the iron curtain would come down again 22 years later. The photographic art by Didier Engels (Affordable Art Fair Brussels 2023) reflects the bright and colourful side of globalisation as much as the overload. The 90s made us believe mainly in the bright side of it. 
Sax and the Sax
Adolphe Sax is celebrated for his celebrated design of musical instruments in what it known and played as the Sax family of musical instruments. Most museums around the world have an example of an early Sax instrument in their collections. Beyond the many fascinating musical delights and emotions produced with the instrument, there is a century-old debate around the issue of the patent attributed to the various designs claimed by Adolphe Sax for the Saxophone among others. The patent attribution was hugely different across Europe in the 19th century (largely inexistant in other parts of the world at the time). The reason for this were differing laws guiding intellectual property rights. “In France no preliminary examination was necessary before a patent could be granted; in Germany examination was obligatory; and … British patent laws, which allowed makers to register designs or apply for patents for developments that had been copied from abroad (imported inventions), as long as they had not been published in Britain.” (Mitroulia and Myers, 2008 p.93). There is a well-documented controversy about the “Berlin valves” and the contested patent in France of it. Design of instruments, particularly popular ones, guarantee sizable earnings for producers of instruments. After 20 years of the 1846 patent in France 1866 the patent expired and the copies could become even cheaper. Some ugly disputes in the middle of Europe were fought around this issue. Remember that military music was still accompanying troops for better or worse. “Visionary or plagiarist? The authors are unable to give a simple verdict. … The fact that Sax claimed originality for some borrowed ideas seems in retrospect less important than the true vision shown.” (Mitroulia and Myers, 2008 p.135). We might not agree with this statement. The visit to the MIM in Brussels gives a good overview of the evolution of musical instruments over thousands of years and across continents, which pushes us to rethink the link of society and technology through the lens of music and technology. Welcome to techno music beyond patent laws. Pushing the boundaries of copyrights on sound sequences to new limits.
(Sources: MIM Brussels, Rice A. R. (2009). Making and improving the nineteenth-century saxophone. Journal of the American Musical Instrument Society. 35:81-122. Mitroulia, E., A. Myers. (2008). Adolphe Sax: Visionary or plagiarist? Historic Brass Society journal, 20, 93-141).
Thucydides on War
Thucydides (born around -460) has received a lot of fame for his “thick description” of the Peloponnesian War. He deserves continued praise even for inspiring statisticians. The account of events without emotions, but with lots of details, is often perceived as the beginning of historiography and history as science as well as empirical political science. The entry of “Thucydides” in the Encyclopedia of Social Measurement (2005, p.805) by P.A. Furia and A. Kohen cites the derivation of a causal or explanatory effect based on his historical account as a foundation of scientific approaches based on empirical data. “The growth of the power of Athens, and the alarm which this inspired in Lacedaemon (i.e. Sparta), made war inevitable” (Thucydides, I 23). The empirical assessment of the growth of power is subject to controversial accounts. Power may derive from population, wealth, industry, weapons, munition or general military capabilities or skills. The assessment would also need to consider relative rather than absolute strength of just a one-sided approach. Here we are in the middle of the Russian war on Ukraine from 24.2.2022 onwards. Statisticians discuss, whether it is just a single variable that has the overall explanatory power for the beginning of the war and what other intervening variables might be important to take into account to avoid a selection bias. Beyond this materialist explanation we might stress the importance of the sociological concept of “collective fear” (links to approximation through trust, xenophobia) of the strength of Athens as the underlying causation of the beginning of war. The ideation of perceived strength gives rise to the construction of many intervening processes (Coleman’s macro-micro-macro linkages), which make a simple causal attribution just to material strength an illusion or risky shortcut explanation. The Thucydidean Method (p.806) exemplifies much of the dilemma and spice of social science analyses. Scholars of diplomacy challenge the empiricist perspective in arguing that the breakdown of diplomatic discourse several decades before was at the beginning of the causal chain. Here again we can make links to the preparation of war by Russia through strategic diplomacy as well as the risks taken through a break-up of diplomatic channels of communication. The perceived strength of the opponent in war might play a decisive role at the beginning and at the end of war. The charisma of leaders, democratic decision-making and political alliances with neighbouring states, Sicily at the time of the Peloponnesian War, were further intervening processes. This is perhaps not all too different from today, if we consider the role of Belarus in the aggression of Russia against the Ukraine. In fact, Thucydides seemed to be convinced that under similar circumstances human behaviour would reproduce itself. Therefore, thick description of historical facts might still inform political leaders today and tomorrow.
(Reallexikon für Antike und Christentum, XV pp. 752,
Der neue Pauly, Enzyklopädie der Antike 12, pp.505 image below).
Double bind
Knowledge and knowhow are a pair of notions that have strong links between each other. It is a challenge to see 2 knowledge systems, knowledges, to co-exist sometimes for a very long time. Medicine is a good example. The traditional Chinese medicine continues to exist in parallel to the western style science based medicine. It remains a challenge to analyse the effectiveness, efficiency and equality each system can provide. In terms of public health the border between knowledge and knowhow becomes more blurred. The knowledge about diseases needs to be transferred into knowhow of how to prevent the disease to the population at large. This is a steep challenge as the persistence of alcohol abuse, smoking habits and other drugs abuses show on a global scale. Knowledge alone on the negative consequences is far from enough to prevent abuse. The thin and blurred line between use and abuse of pharmaceutical products equally challenges our traditional views on knowledge and knowhow. In a knowledge graph knowledge would figure, for example, in the core and knowhow as a satellite on the periphery. However, despite the strong link between these 2 notions, knowhow has a lot of additional links to topics like health or yin and yang. Knowhow has a basic link also to notions like memory (techniques) or even war (equipment). The more abstract notion of knowledge, “le savoir”, has been seen for a long time superior to the less abstract notion of knowhow, “savoir faire”. Polymaths have been identified for touching on several fields of knowledge with little concern for the practical side of things, despite the fact that Leonardo da Vinci combined many fields of science of his time to improve technology of his time including visions for the future. The double bind link exists in the recursive element of a link between 2 notions. Rather than denying its existence we have a lot to do to incorporate the more complicated links into our scientific knowledge and the more practical knowhow. 
Bio-medical-sociology
In family histories we like to look on tree-like linking structures. Most frequently the choice is the descendant perspective (Top down). X, Y, Z have been the children of A and B and so on for a couple of generations. Bottom-up perspectives are equally feasible and modern patchwork families have more widespread representations of their families. Those representations were easy to do as families were lifelong bonds. Shorter family bonds, previously mainly caused by pre-mature deaths, are more common as people might have different partners and off-springs at different periods of their life course. Drawing family trees then looks more like a network structure of several families. History and literature is full of stories of how families aimed to keep their genealogy simple to the outside world. Modern days are no exception to this. Law had to adapt to these societal facts and changes thereof. Comparing decades over the last century there is, in my view, the remarkable trend to allow for more complexity in family histories, even after the 60s leading to many complete ruptures of family ties and links throughout the 70s and 80s.
With reducing fertility rates in most, not only western regions of the world, medical demography is back on the agenda. Similar to family trees, new forms of identifying promising pharmaceutical products have moved to more data-driven disease insights. Historically the local medical doctor had an overview about the likelihood of diseases following family’s medical histories over generations. Data-driven analyses, supported by data analytics and/or AI support, can learn permanently about potential and actual risks. New links of diseases are discovered this way extending the family doctor’s view of risks to watch out for in patients. Additional remedy and marketing potentials of existing drugs are also detected this way, beyond anecdotal evidence. Research published in the “Journal of biomedical semantics” by Vlietstra et al. (2020) classifies disease trajectories to construct knowledge graphs of biomolecular interactions. What previously a medical doctor in region could infer from his medical records in a less systematic way, can now be analysed on big data sets of countries, continents or even the global scale. Data is knowledge, and some already know, that this data-driven knowledge is worth a lot of money. Linking previously and seemingly unrelated facts or events, just like becoming aware of more complex family trees through DNA-analyses is the medical part of history. How we deal with this as families or societies as a whole, is the trickier part. Structural changes of societies are marked by decades-like changes, but specific events like “Fukushima”, Tschernobyl or other man-made rather than natural disasters have created new forms of contamination and the spreading of it. In addition to family trees we need broader consideration for knowledge bases to demonstrate, for example, the spread of cancer in the networked society. Additionally this evidence should have a stronger recognition in courts as prove of contamination lines. Statistical reasoning is more likely to become court-relevant. Hence, train the legal profession beyond what “statistical discrimination” is like. Causal mechanisms are manifold. Some are more likely than others. Semantic knowledge graphs remind us of the presence of reverse causality many relationships. Scientists need an optimistic state of mind to abstract from many intervening processes on health, be they tiny micro- or bigger macro-level societal effects. 
From AI with Love
Love is action. Love is balance. Love is corruption.
Love is democracy. Love is enterprise. Love is freedom.
Love is god. Love is health. Love is imagination. Love is joy.
Love is knowledge. Love is law. Love is memory.
Love is nature. Love is optimism. Love is policy.
Love is question. Love is repairing. Love is society. Love is time.
Love is union. Love is value. Love is war.
Love is xeno. Love is yinyang.
Love is zero.
All you need is laugh. Love is all you need. 
Aphorismen
Eine Sammlung von Aphorismen, wie sie Georg Christoph Lichtenberg hinterlassen hatte, regten viele Denkende an, sich mit seinem Gedankengebäude zu befassen. Die prägnante Form der Zusammenfassungen, Hypothesen oder Vermutungen zu jeweils einem großen Thema hat ihn unsterblich werden lassen. In Form von Gedankenblitzen, Neudeutsch Tweets, vor mehr als 222 Jahren, gestorben ist er im Jahr 1799, zeugen von großem Weitblick, Tiefe und Breite seines Wissens (Polymath). Jede Person, die sich heute in der Schule mit der Infinitesimalrechnung befasst, der mathematischen Annäherung an einen GrenzwertS (Mathe Vorlesungsnotizen pdf), findet bei Lichtenberg zum Beispiel die Anwendung dieser Methode auf soziale Phänomene. Einer Wahrheit werden wir uns auch nur annähern können, selbst wenn wir sie auf unsere Weise, zumindest temporär, als solche definieren. Vor mehr als 250 Jahren hat Lichtenberg bereits in seinem ersten „Sudelbuch“ interessante Gedanken niedergeschrieben, die uns heute noch Nachdenken lassen. „Unser Leben hängt so genau in der Mitte zwischen Vergnügen und Schmerz, dass uns schon zuweilen Dinge schädlich werden können, die uns zu unserm Unterhalt dienen, wie ganz natürlich veränderte Luft, da wir doch in die Luft geschaffen sind.“
Dem modernen Menschen ist das Bewusstsein, in die Luft geschaffen zu sein, fast vollständig abhandengekommen. Unsere Eingriffe, wider besseren Wissens, lassen weltweit jährlich Millionen Menschen vorzeitig sterben am Smog der Moderne. Innovation ist enervierend, wenn sie nicht vornehmlich den Menschen im Blick hat. Es sollte noch einige Jahre nach Lichtenberg brauchen bis Goethe Faust den Satz sagen ließ: Die Geister, die ich rief, ich werd’ sie nicht mehr los. Lichtenberg setzte das obige Zitat so fort: „Allein wer weiß, ob nicht vieles von unserem Vergnügen von diesem Balancement abhängt; diese Empfindlichkeit ist vielleicht ein wichtiges Stück von dem, was unsern Vorzug vor den Tieren ausmacht.“ Aus dem Akt der Balance den jede/r Einzelne zwischen Schmerz und Vergnügen im Lebensverlauf beschreibt ist längst ein gesellschaftlicher und politischer Balanceakt geworden, zwischen gesellschaftlichen Gruppen sowie zwischen Generationen. Die Abweichungen von einem Grenzwert oder von einem ausbalancierten Zustand sind ebenfalls größer geworden, so dass der ganze Akt ins Wanken gerät. Mit dem beschriebenen, unserem Vorzug vor den Tieren, könnte jedoch ebenfalls ein Teil des Problems sein, denn die Vernichtung der Biodiversität ist nun mal noch die Lebensgrundlage des homo sapiens. Seien es Schwankungen um einen Mittelwert oder immer kleinere Annäherungen an einen Grenzwert, wir wanken auf Pfaden, die Lichtenberg angerissen hat. Blogposts sind wohl vergleichbar den Einträgen in Sudelbüchern. Aus vielen Puzzleteilen kann ein Gesamtbild entstehen, muss aber nicht. Die Begriffe „Random Walk“ oder „Brownsche Bewegung“ sind erst lange nach Lichtenberg entwickelt worden. Heute sind wir von dem „Random Walker Algorithmus“ begeistert oder erschreckt, wenn letzterer für „fake news“ statt Wahrheitsfindung missbraucht wird. 
Photo K
The self portrait is a timely topic for an exhibition of photography. As part of the European month of photography (EMOP), the PhotoBrusselsFestival offers a good overview of what photography deals with in the 21 century. The Korean cultural centre (KCC) in Brussels has a long tradition to serve as an exposition in the centre of Brussels (Sablon) and is joining this year’s photo festival. The 2023 photography festival has the “Self-Portrait” as a guiding theme. Rather than entering the debate about “portrait chosen or portrait endured” (Photographica 5,2022) the self-portrait has more degrees of freedom in it. Even if it is apparently a choice to portrait oneself, there are ample examples, where the urge to produce a self-portrait is part of a wider concern for fundamental issues.
The exhibition of 5 artists from Korea at the KCC invites us to reflect on the pervasive self-portrait practice all around us. The self-portrait is not only a tool of self-reflection, which has a long tradition in art (just think of a famous drawing by Albrecht Dürer of himself), but self-portraits are also pervasive on media and social media today. Additionally, the self-portrait is a powerful tool of thinking and imagining yourself at various stages of the life-course. For centuries it had been a social or political privilege to have your portrait taken. It still is to some extent, but only if the person taking the photograph, has a special reputation. In a market difference to the selfie, the exhibition of artists in the KCC highlights the process of self-reflection that is part of creating the portrait as well as the ensuing reflection by the spectator. In looking at the self-portrait of the photographer, we might involuntarily deal first with our own perception of the image. Danger, dreams, fantasy, sorrow, pain, self-assertion and reconstruction of the self, all these themes come to mind when confronted with the self-portraits of the 5 artists (Bae Chan-hyo, Jeong Yun-soon, Lee Jee-young, Ahn Jun, Choi Young-kwi).
KCC director Kim Jae-hwan names this collection, curated by Seok Jae-hyun, “An odyssey of images leading to self-re-flection”. In referring back to the protagonists in novels from Hermann Hesse, he points our attention to the “unique journey through images as they find themselves”. To embark on the journey visit KCC in Brussels, ask for a copy of the catalogue or start by reading the title of the exposition: “Who Am I” – it is apparently no longer a question after the journey. Is it for you? More reflection on images and photos here. 
Art Un-Fair
The Brussels Art Fair (Brafa 2023) with its long tradition is certainly a major highlight in the world of art in Brussels. In view of the languages spoken at the fair, mainly French and Dutch, some English with here and there a word in Spanish or German, the international reach is probably still not at the level of before the corona crisis.
The availability of established, internationally recognized art over many centuries on the art market is remarkable. Whereas before the crisis speculators bought art to shield their fortunes from a high inflation and/or politically instable period, nowadays it seems to me, that some art is returning to the market due to the need for liquidity of speculators or risks of confiscation in case of dubious previous acquisitions or ownerships. Renowned galleries, of course, provide impeccable certificates or information on them, a tricky business in itself. Anyway, the tour on the fair is a “parcour” through the history of art, mainly through the Western or European arts across centuries rather than decades. Most persons will find splendid examples according to their preferences of art ranging from paintings, sculpture, prints or other artefacts. Beyond the impressive individual art work, the arrangements and “mise en scene” of art is another learning experience at the fair. Whereas most public museums are happy to make accessible as much as they can of their collections and archives, the private art market has another objective. Effective and convincing presentation of the artefact is likely to “enrich” the value of art work as well as the seller and the dealer. Technology allows great lighting and some otherwise “sombre” artwork becomes a shiny little piece catching eyes, hearts and wallets. For some visitors it works probably the other way round.
For persons overly stimulated by art, I recommend to close the actual or virtual visit with a look at the little bit cheeky artwork presenting Belgian chocolate next to royalty (Gallery Delaive, showing Peter Anton’s “Paradise Variety” next to Andy Warhal’s depiction of a Queen, see below or their Instagram presentation). A sublime moment to repeat the experience at home at moderate prices with your very own box of chocolates. At a price of 10€ each box you can enjoy roughly 2000 of them for the price of the art work. The question is: What is more healthy? Think about mental health as well. Alternative question: Art on a Fair is fair, unfair or fair traide? 
50s
The fifties are remembered as the prosperous and booming years in the 20th century, worthy of nostalgy for some. Indeed, after the 2nd world war and its destruction the time of re-construction had come already some way, thanks to the Marshall plan of the late 1940s. Most countries had to turn huge military equipment industries into civil uses. After the Schumann Declaration, the European Coal and Steel Community was a first successful and lasting institution building in Central Europe. A mass production boom of cars, civil aircrafts, radio and the beginning of public television were landmark changes in the relationship of technology and society. The U.S. became a leading force in this evolution pushing for free trade between countries and consumerism. The deprived generations of the war period in the 40s welcomed the “fabulous fifties” (Arleen Kelin, 1978) as a dynamic and prosperous decade, despite dramatic speed to innovate new more deadly weapons. The atomic bombs were tested from superpowers and nuclear energy started to surface. Solar cells and optic fibres were also inventions of the mid-50s. Strange that we had to wait for another 70 years and multiple crises before these resource-efficient technologies achieved popular success. Integrated circuits, micro-chips, the laser, Tupperware, Coke, Lego, Mickey Mouse and global cinema came upon us during the 50s. The Sputnik effect re-opened an arms race as part of the cold war including outer space beyond airplane reach.
Families longed for and indulged in an as normal as possible family life. Unfortunately, this meant for many women, who had worked outside home during wartimes, to return to a role of housekeeping. Rock n Roll and increasing consumption of mass produced products could compensate for some of this deprivation. Higher divorce rates in the 60s and/or lack of own pensions were the dire consequences for many women. Showtime, and showing-off were the mantra of the 50s. Glamour (Magazine) rose to cult status and prepared popular culture and art. Following fashion and awareness of design spread across societies enabled by the easier access to “sewing machines” allowing more home production for the middle-class persons. The “people of plenty” (Andrew Dunar, 2006 p.167-8, referring to David Potter, 1954) were effectively sold a car culture with the automobile as an agent of change.
The atomic era was believed to continue prosperity for more decades (Expo 58 in Brussels) and a delicate, but relatively stable balance of power restricted open wars. “The End of Ideologies” during the fifties (Daniel Bell, 1960) lead to focus on Realpolitik and a race for prosperity, oblivious of the ecological consequences for many decades to come. 
Protest
In studying the 60s we still come up with a number of remarkable ideas. Not only concerts moved the masses but also new ideas flourished. Many subcultures developed specific forms of protest. To implement new ideas, new forms of protest were applied to advance civil rights, to overcome established routines and to raise awareness for inequalities and injustices. New forms of participatory democracy were tested and some reached public attention and/or approval. Burner (1996, p.162) even goes as far as defining freedom as “continuing exercise in decision-making” which hinges on the taking-in of all voices across society. The coming together of freedom and community constitutes the cross-roads of politics. Besides terrible effects of violent abuses, peaceful forms originated in Gandhi’s peaceful resistance in 1930. Martin Luther King and later Nelson Mandela reached historical milestones through peaceful forms of protest. In 1967 in Oakland, California, the form of “action protest” took place. The basis of protest was civil disobedience going beyond sit-ins as the civil rights movement had applied. “They involved blocking roads and entrances to buildings, peacefully inasmuch as the demonstrators used no force beyond the presence of their own bodies or other obstacles to passage.” (p.163). The new feature was, that protesting persons take the risk of being a victim of violence without a violent response from themselves. The intention is to “convert temporary antagonists into permanent friends”. Through the repercussions in mass media protesting persons can reach larger audiences and touch “uninvolved or possibly sympathetic bystanders” (p.163). Such new forms of participatory democracy, acting in the public arena, are stretching the idea of peaceful protest to its limit, where the freedom of others might be impinged. Participatory democracy, therefore, is a balancing act. Some recent forms of protest, in fact, have their origins in the 1960s or the year 1968 a focal point. They continue to be influential 55 years later in many countries and at all instances where basic freedoms or minority rights are violated or threatened.
Protest has also moved online. Internet sites are not only used for simple communication, but they serve as port of entry to prepare and organise protest. High-jacking of company or political adverts in the public arena can be taken online as well. Challenges to conventional politics and media representation is enacted through webpages like www.adbusters.org or www.indymedia.org the latter page comprises a whole network of local activist groups. Brian D. Loader (2003, p.1320) has added activist approaches against particular corporations to the list of online protest forms. Through public shaming of brands these activists attempt to raise awareness of the public for abusive employment practices, cruelty towards animals, environmental disasters or fake information using online channels like social media, email-lists or chatgroups via mobile phone numbers. The funding of protesting persons is another relatively new form which ranges from crowd-funding initiatives through platforms as well as forms of corruptive practices applied by states or corporate interests. Protest against protest is online and offline the next round of activist forms of protest. Democracy, law and the police have to balance out these new forms of protest. Learning about the way democracy functions is a continuous task, some would say a continuous struggle. Evaluations of the short-term or long-term effectiveness of protests yields important insights about the functioning of democracies and autocratic regimes. New forms of protest need new forms of measuring impact as well. 
70s
In autumn 2019 the Cosmopolitan featured a headline “Stop fighting it: the ´70s are back”. At least in fashion the 70s are still with us. Platform soles, moon boots, hot pants, all had their first appearance in the 70s. We keep seeing them in fashion shows even 50 years later. In politics, the retreat of the U.S. from Vietnam in 1972, with more than 50.000 killed soldiers from the U.S. and many more Vietnamese persons, is certainly a success of the sizable activists’ peace movement of the 60s. Willy Brandt’s kneeling in Warsaw in front of the heroes monument in honour of the Warsaw ghetto marked the beginning of a reconciliation with Eastern parts of Europe.
The oil crises 1973 and 1979 caused mass unemployment and from the beginning of the 70s “Greenpeace” started its on-site activist approach against nuclear weapons, killing of whales and dumping of toxic waste. The network of independent organisations is contemporaneous to the invention of e-mail between large so-called mainframe computers using the now common address format x@y.z. The feminist movement achieved major successes with a UN resolution to ban discrimination against women. The male dominated aggressive and excessive punk movement occurred almost in parallel. New products like the Polaroid camera for instant photos and prints, video cassette recorder, the chopper bike “Bonanza” as well as the collapsible Maclaren Buggy for children defined a lifestyle around a more mobile society. Plastic furniture, bright colours with uncommon combinations brought with it a more diverse culture. Societies exploded into different lifestyles. Some taking the new Concorde, so-called supersonic speed delta airplane between Paris and New York, whereas others walked around in “wooden clogs” as a kind of folk fashion, watched Kojak the bold police inspector, listened or sang to ABBA tunes, danced like in “Saturday night fever”. In December 1979 Pink Floyd released “The Wall” which became with 23 million sales the top seller of all 70s productions (Champ Hamish p.120). Some of these artists we can still enjoy jumping up and down on stages across the world or being honoured with a Nobel prize in literature like Bruce Springsteen.
The wild 70s are remembered for the sexual revolution, the philosophy of love and peace as well as the continued spirit of the civil rights movements (Particia Massó, 2010). The sexual revolution spurred women’s liberation just as additional exploitation by thriving borderless consumption industry. Sex sells and it sold well. The cinema and print industry cashed in on the new trends and the spreading the new trends. Social relationships became much more unstable, divorce rates increased sharply in the 70s. In response, “surviving the 70s” (DeMott, 1971) a kind of survival guide tried to give advice of how to stem the tide, largely unsuccess for some decades.
Societies continued to explore new forms of life, while some niches of conservative life styles started to shield themselves from these outrageous trends. Vasarely imitating tapestry and design invited new forms of facing your own walls. Where to go on from this liberalisation? More equal rights for all, was a claim, but it took several additional decades to achieve some of the claims. Intersectionality, viewing for example violence as an across gender, social class and ethnicity as an overall mankind issue, became a claim much later only. “All in all, it was just bricks in the wall”, a huge wall it still is. We haven’t climbed it yet. 
80s
The colourful 80s. That could be a summary of the years from 1980 to 1989. Certainly in fashion and design a multitude of colours dominated the 80s. Mariel Marohn (2010, Ed.) published 20 years later a visual summary of the 80s. Often thought as less spectacular than other decades, the 80s had seen some defeats to start with. John Lennon shot dead in New York December 1980. The NASA space shuttle Challenger explodes 2 minutes after the launch in 1986. Nuclear accidents (after three mile island 1979, Tschernobyl 1986,or the finding of the Titanic demonstrated not only the “limits to growth” (1972), but reminded us of deadly consequences of technological ambitions wanting to move too fast in time. Ghettoblaster, Walkman, first cell phones, facilitated a more mobile life style to more people. Overcoming the oil crises of the 70s, mobility roared ahead again. Cars, bikes, planes, CDs, windsurfing and aerobics become part of the lifestyle in these years.
Mass culture in music reached all levels of society. Music was no longer perceived as a protest movement, but a normal part of the freedom of expression. Fusion of music and dance, but also music and street art like in hip-hop music and graffiti art become part of day-to-day experiences of commuters. In the anthology of poems of the 80s we find on page 141 “Commuters” by Edward Hirsch 1983 who singles out the commuting practice as the way of life, he does not want to identify with. “Malgré lui”, in spite of himself, he finds himself in cars, trains travelling distances every day. More, faster and with more colours, time moved on. The fall of the Berlin wall 1989 was thought of as a “Zeitenwende” already. Royalty in the press with the marriage of Diana & Charles, was replaced by Madonna as the Queen of Pop and Michael Jackson as the King of Pop. The digital age entered into a new era with the Apple Macintosh desktop computer with an accessible visual interface to computing. Reaganomics and Thatcherism pushed for a revival of liberal market economies ploughing the fields for digital multinationals (GAFAM) to thrive ever since. These lasting technological changes define this period as colourful, grabbing all our senses and attention. Want to breathe a bit of the air of the 80s – visit MAD Paris. 
Linguistics2
Languages are simple once you understood the making of them. Take children, they learn the alphabet first, and use notions or images in alphabetical order, which you associate with this list of short words from A to Z in western cultures. From short words like “Cat” and “Dog” the learner moves on to longer ones like “Bird”, just 4 letters now. More advanced learners then use more letter words like “supercalifragilisticexpialidocious” invented for amusement in the Disney-film Mary Poppins. It sounds a bit like one of those never-ending long German words with lots of nouns just added on. This is exactly what we shall do in the following. A bit like in computational linguistics when ChatGPT is predicting the next word, we use algorithmic thining to form new combinations of an alphabetical list of notions. We start in the table below with column 1, then tell our spreadsheet to copy cells A1-01 to Z1-26 list and insert it in the second column just one cell below and insert Z2-27 at the place on the top of the list of column 2, which is A2-01. Then take this column 2 and repeat. Stop after, lets say the repeat counter is N=25.
The first 2 words combination then is “Action Zero”. Take this, enter it into Computer Search and take the top entry. “ActionZero” is an actual company name proposing actions to achieve net-zero emissions. Following this, we produce a whole encyclopedia of pretty up-to-date knowledge from the WWW with hardly any humans involved anymore. We only need to cut out duplicates and nonsense entries. That’s what most editors or teachers are used to do. Knowledge creation might no longer be reserved to the human species. Oh my God – but the machine might eventually sort this word out as nonsense concept, too. The new mantra could be ZeroGod or let us try the reset like in GodZero. In other words we move from HamletMachine to our own KnowledgeMachine. 
knowledgeable
It is the role of scientists to ask questions. “The New Scientist” asked in one of its recent editions the fundamental question of what are the limits to knowledge? Nice, they provide 5 parts of an answer to the question. (1) According to Karl Popper, the falsification guy, knowledge is only valid as long as it has not yet been falsified. Hence, a limit to knowledge exists where we cannot falsify a hypothesis or theory, i.e. for example when empirical measurement is impossible. (2) Mary Douglas’s messy problems have been claimed as another limit, or as the New Scientist puts it, “when things are outrageously complicated”. Chaos theory, applied in climate modelling leads us to learn about the potentially huge impact of tiny, little things. (3) Our tools to look into the sky have improved since Ticho Brahe‘s time before the telescope was invented. Most of our knowledge about the universe has only be as accurate as the tools to capture radiation or to observe planetary movements. Therefore, the next limit arises from the fact, “when our best tool to describe the universe may be unreliable”. (4) “When we can’t directly experience something”, we might be unable to understand the concept of colour another person or animal is experiencing. Listening to colours is possible for some, but generally we would not accept such experiences without recourse to drugs, maybe. Bats use ultrasound frequencies, especially trained blind persons use “click sounds” for orientation. Dialetheism is another branch of the philosophy of science and knowledge, a bit hard to digest, as empirical evidence may lose its importance. Its all dialectic or what? (5) If “logic itself is fatally flawed”, what are we left with to construct as knowledge, beyond logical sequences or even causality itself is in question. The Condorcet paradoxon or the impossibility theorem shown by Ken Arrow is an example where it is impossible or very tricky to arrive at a logically consistent solution to a social choice issue. Our tree of science and knowledge grows, undeniably, every second even. Where are we located in this forest now? Thinking of a tree up-side-down shows some have roots even bigger than the visible branches.
Does the Panda bear in the Berlin Zoo have a cognitive map of the cage in his mind? Do they care? Only recently they even had a baby Panda bear there. 
Photo
Photography has captured our imagination for years already.
It is now a daily activity of many people to “capture their experience”, if not even their existence in some photographed way. Susan Sontag (1977) coined the phrase that photography “feels like knowledge – and, therefore, like power”. You are in a relation to the world. Taking the photograph in my view is the Mephistopheles moment. You are in control of the object taken by the camera. Arranging the scenery, waiting for the perfect moment, expression, light or colours is like mastering a situation, an atmosphere, an emotion. Photographs have the power to work as a document. Editing has become easy and pervasive with digital tools. However, it was always present in the traditional technical parts of shooting and developing subsequently in the dark room.
“to be taken” on a photograph is more like the Faustian moment of realising that you are manipulated, or at risk of being made use of, for some purpose, unknown to you at that moment.
Beware, a photograph is always just an image of an image. The photographer is the intermediate person using a specific technology to transform his perception or vision of (her/his) reality into another image of it, creating some form of virtual reality.
In addition to this twofold transformation, the third transformation is historically the technical development of the negative into the print (see below). Nowadays, this is the compression and editing into a specific format. Despite these transformations, a photograph is admitted in court cases as providing evidence of guilt or to identify an illicit act (excess of speed limit). Infringements on privacy are the rule rather than the exception. Who is that person sitting next to you, and at what time of the day?
I, personally, apply photographs often like note-taking for research to capture spontaneous ideas or associations, which await further interpretation or may serve (served) as inspiration.
Compared to photography, painting has been a more elite artistic practice for many years. Taking photographs has democratised the image-taking art forms. Instead of originals, many of us have collections of photos from museums around the world. We take “photos of photos” to reveal the world around us and reflect on values. The social construction of the world is directly visible through the process of taking, collecting and curating photographs. Construct your own world or the world will construct or deconstruct you instead.
Politicians (e.g. Angela Merkel), John F. Kennedy or historical figures, all had their defining moment condensed into one or several photographs, what have been famous paintings in art history before. Susan Sontag wrote 50 years ago: “… a photograph can be treated as a narrowly selective transparency”. The third transformation of developing and/editing, shown in the images below, explains what we might learn from this citation in a technical sense. Just as courts have to evaluate, whether a proof is admittable and contributing to finding the truth; viewing photographs is a balancing act between art and truth.
“Even when photographers are most concerned with mirroring reality, they are still haunted by tacit imperatives of taste and conscience.” (Sontag, p.6). Photographs document sequences of consumption. We should frame this as CO2 footprints in the 21st century. Restricting print to a few “best of” was and is necessary to reduce the dirty footprint of photography, particularly since photos have become a mass media as much as the preferred media of masses.
With photographs we certify our own certificates, for example in case of job applications or passports. We encounter “cosmopolitans accumulating photograph-trophies” in all instagram-able locations.
Taking photos is like a “friendly imitation of work” (p.9), you do something useful in documenting the images of a world in danger of being lost. We can give importance to otherwise forgotten realities, attach importance even immortality to something or someone of our choice. We make history through it or try to make it at least. “When we are afraid, we shoot. But when we are nostalgic, we take pictures.” (p.9) Sontag defines photographs as part of the repertoire of surrealism (p.77 ff), “to finding beautiful what other people found ugly or without interest and relevance …”). We are at risk to mistake photographs as reality and experience the original as “letdown” (p.147). The return to polaroid instant photography brings us back to a proclaimed authenticity of the orginal, unique moments, with supposed unfiltered not-edited images. The true moment of having had fun or joint experience without use of photoshop to add the missing member.
“I take photos, therefore I am”, has become the mantra of modern societies. We tend to ignore that we are taken on photos a million more times than we take some ourselves (video surveillance). It is a question of power in the end. Edit yourself or you become edited.
(Image: Prix du Tirage photographique BnF 2022 Laurent Lafolie, photo below). 
Hypertext
Linking information, explanation and entertainment is the power of the world wide web. The tool used for this is the hypertext format of texts and media in general. Wittgenstein was already dissatisfied not to be able to show the steps of his thinking more explicitly. In the “Tractatus logico- philisophicus (Link to pdf-file de/engl” he uses the a cube (5.5423) to explain that we see to different facts depending on our point of departure of our vision. Try it with the logo of www.schoemann.org you should realize how our vision swops from one way of viewing the cube to another. The white corner is once in the front of the cube and appears to be in the back, when you move your vision further up. In general this leads us to be careful with the choice of our point of departure, not only for our vision. Context, some say background, is important to determine starting points. Adding the hypertext markup language to a document, like in a blog entry, allows readers (+algorithms) to see the cognitive structure surrounding a text as well. Potentially as a reader you enter into a multidimensional space with each blog entry. Any encyclopedia, glossary or index has an apparent alphabetical order to entries, but the links between the multiple entries remain hidden at first sight. With use of hypertext this has changed and each entry is turned into a 3-dimensional space, for example. Additionally, all entries have different numbers of links to other entries including dead-end entries. With the structure of links it is interesting to learn about the self-referencing just as much as about the disciplinary locus of a text, chapters, a book or a library. This helps to still see the forest despite all those trees in front of us ,or we see the geological structure of the mountain while in the middle of the forest. Happy travelling in our new knowledge space! 
Employment
Employment is back on top of the agenda. Not as we used to think, though. Previously unemployment had dominated societal concerns. Now it is the lack of persons seeking or available for employment. What has happened? The Covid-19 crisis has demonstrated the need of persons qualified to work in the health sector. From health care and urgency care, we are short of personnel in all these fields, everywhere. 
Then we discovered the role of essential services and the need to equip crucial infrastructures like ports, transport, shops, schools and ambulances with service persons resisting despite work overload. Larger cohorts leave employment to retire, some even early due to illness or burn-out. Additionally, war is back in Europe. Military personnel is in high demand again, drawing largely from younger cohorts. The need for conventional weapons. long thought to be oblivious, is forcefully back on the agenda.
Growth potentials are everywhere. However, these pre-modern facts encounter a population in the western democracies that insists on new approaches to employment. Beyond hard and soft skills, recruiters seek atypical skills, competences and trajectories. A parachute jump from an airplane, cooking and dining experiences, caring spells, periods in self-employment, all are directly or indirectly relevant for employment and teamwork. So, what is your specialty? Collecting stamps? Surely you are able to spot tiny differences in images with specific content. Fake news and fake image detection or video surveillance is in high demand, just try an application and discover the employment potential of your MAD skills. Sounds crazy? No joke. Skill needs are everywhere, just give it a start again and again. Read a serious newspaper regularly (here LeMonde 19.1.2023) for inspiration.
Deconstruction
Deconstruction is a powerful tool or even method. Beyond imagineering, deconstruction in the literal sense means take to pieces. In most cases a physical object consists of several objects or parts. By deconstruction we attempt to understand the whole object as the sum of its parts. Before a new product or design is created, many scientists, engineers and artists start to deconstruct existing artefacts. Understanding how the object is assembled, for example, allows you to play around with pieces and maybe come up with an alternative way of constructing the object. The architecture of “deconstructivsm” has left us fantastic buildings. In furniture design there are also nice examples of deconstruction. Paris is a good place to study deconstruction (Explained), perhaps many still read Derrida there. It is a fruitful method beyond its engineering sense for example in law, literature or many other social science disciplines. If you are not mad yet, visit the MAD in Paris to see examples of deconstruction or construct your own deconstruction. Both have a dialectic relationship to each other anyway.
Sublime
The exposition of art work in the MAD “Musée des Arts Décoratifs” in Paris is sublime. Growing out of fashion design into the work of art can be a process of sublimation: passing from one state of designing one product to producing artwork. The intermediate state of artefacts created for designing a product, like the drawings of fashion designers or scenery and costumes in theatre and operas, are often less visible or subject of exposition. Objects become subjects. A trend in recent expositions is to devote more space to the applied arts like stage design, costumes as well as products of everyday use. “Bauhaus” has a lasting effect.
Elsa Schiaparelli has achieved this sublimation. Starting with extravagant fashion design, her designed fashion objects were adopted by Picasso before she developed into the sublime state of artist with her artefacts herself (see below). Now in this process of subjectivation she is the prime subject of an exposition herself. The combination or arts and crafts (Kunsthandwerk) has been always present in art history. The challenge of concepts combined with arts is more recent or just more explicit since the late 19th and 20th century. Being able to live from your artwork is still a challenge, though due to “Mäzene” and state subsidies it is more feasible to follow artistic trajectories. 
Subject/Object
The 26 notions in alphabetical order may determine a subject and/or an object in a sentence. This is just the simple grammar of a language. Add a verb and we have a full sentence subject predicate object (SPO) as they say in English. In the philosophical sense the subject-object relationship is a bit more complicated. Beyond Aristotle’s objectum and subjectum, we think of Descartes “Cogito ergo sum” as the definition of the self as subject, rather than being an object of God’s will and creation. Kant then forms the couple of object and subject in the sense of objectivity and subjectivity. Pure reasoning is the abstraction of subjectivity to achieve an interpersonal objectivity. The master of dialectic thinking, Hegel, conceives an object as objective conscience and a subject as particular subjectivity. Having defined the extreme points of the spectrum makes you think about a joinder or the synthesis. Freud adds the object as result of sexual impulse. Wittgenstein then introduces a kind of hierarchy into the S/O-relationship. Objects become ultimate elements and indescribable in content as kind of basic notions. This follows the mathematical view of objects as indirect description of a mathematical object through axioms stating the basic principles governing the object and then deduce the logical consequences. Gödel’s incompleteness theorem , however, rejects this claim. This is the basis of, for example, algorithmic testing whether deductions are true or false. Condensed mathematics has relied on this testing approach as well.
A pragmatic perspective is added by Marie Gautier (p.719 “Notions”). If we want to reach an objective, we shall need others to realize it. By way of this imagination the S/O-relationship turns into an interactive relationship. Following Habermas, we might claim that the S/O-relationship is also a part of communicative action and therefore the discourse ethics. The definition of who or what is object and/or subject needs open discourse. The arena is not only the parliament, but larger audiences or the world wide web. Beware of the Luhmann systems theory, whereby for example the definition of what is a technical object is, is left to technicians, who then ponder in their self-reflective, reflexive circles amongst themselves. Techniciens in their circles tend to neglect the prime importance of society and laws to determine technological choices. Language with its constituent elements of subject, predicate and object (SPO) is one example of a knowledge system build on axioms or negotiated conventions for grasping and exchanging about phenomena. Nice, now we play around with it.
SPO => OPS. 