In the 21st century hallucinations have become a daily experience. The origins of the word can be followed back at least to the Latin verb “alucinor”, best translated with “to hallucinate”. As a verb to can conjugate it, meaning that I can do it, you can do it, s/he can do it, and we may do it in groups. Roman emperors did it, American presidents do it and, of course, AI does it. Hence, it is a great subject to study.
In “Nature” 2025 we find ways to limit hallucinations of AI systems. The strategy consists mainly in repeated queries of the same type, but from different angles. It is a bit like cubism applied to informatics. On “github.com” we can follow the rankings of AI-models using LLMs based on the “hallucination-leaderboard” developed by Vectara. On “huggingface.com” you can test the Hughes Hallucination Evaluation Model. For example it is possible to run a test of your own small text documents (just like any blog entry on this webpage) and what the AI systems will do them in an attempt to summarize your ideas. According to the “hallucination-leaderboard” we are confronted with a 1.3%-4% hallucination rate of the top 25 LLMs as AI-systems. In text based systems the quantity of “errors” is a first indicator only. The seriousness of the omission, addition of wrong information or an erroneous judgment will be left to the reader or analyst to uncover.
There is now a lot to do to test various AI-systems on their “trustworthiness” in summarizing my own work. My very own daily hallucinations have become a large data base as a test case for the capacity of LLMs to make sense of them.
Based on the series of passed blog entries I shall test the capacity of AI to predict the n+1 blog entry. It would be great to know today what I am going to write about tomorrow etc. Thanks to AI I shall have (finally) a sort of intellectual life after death (not sure whether I should want this). Enough of hallucinations and on hallucinations for now, back to serious readings or fictionalized science. (Image: extract from Delphine Diallo, Kush, 2024 at Hangar Gallery Brussels). 
Ukraine Poets
Difficult times have a long history in Ukraine. However, literature and poetry have flourished since the Ukrainian independence from the Soviet domination in 1991. Periods of hunger under Stalin, Nazi crimes in the 2nd World War, Tschernobyl radiation, Annexation of Crimea and now Russian war on Ukrainian territories, the endurance of hardship is part of Ukrainian culture and society. This has created a strength of resistance and resilience which is exemplary for all countries. The democratic countries stand firmly on Ukraine‘s side and support not only military defense efforts, but also artists and poets in such difficult times.
A collection of translated poems from Ukrainian into English has been published in 2027/2018, showing the horrors of the large scale war that was to come a few years later. In fact from the Ukrainian perspective the annexation of Crimea was the first war initiated by Russia although the Western world did not want to see this as a brutal aggression, which it was. The poems in the anthology are available online for everyone to read and understand that war changes personalities. Suddenly, dying of old age becomes a blessing as many young soldiers and people die on the battlefields (Died of Old Age, by Lyuba Yakimchuk translation by Anatoly Kudryavitsky) .
7 years after the translations where published the poems have kept their sorrow and the reminder for us to continue our support for Ukraine‘s fight for democracy, independence and freedom of speech and the arts. (Image: Front: from War Diaries, Brussels 2025, shown in Gallery of Katarzyna Napiorkowska).
Science and Fiction
We associate with science and fiction the extrapolation of scientific trends into some futuristic settings. The most striking examples of science fiction in novels or video use some scientific findings (dinosaurs, genetic engineering) and project this knowledge into another fictional setting. The usual personal relationships follow rather predictable plots of romance, deception, violence or war.
The novel “Wellness” (Hill 2024) is also a kind of science fiction as it is based on social science evidence and builds its fictional plot firmly embedded into the social and psychological research. The attachment of references (and defending the print of those in translation) underlines the commitment to write a new type of “social science fiction”.
In this innovative style the scientific basis of psychology and sociology is then extrapolated into a fictional arrangement. Research on subjective well-being with the U-shaped form over the life course and the extrapolation of the placebo effect, which is instrumentalized for a business, derive from key topics in the social sciences. In fact, the novel and the background scientific literature in the bibliography could well figure in a social science course at university entry level. These readings constitute a 360-degree-view on personal development and social structures. Of course, social sciences move on and add new evidence on an almost daily basis, but the selection and arrangement of the characters create an innovative social science fiction, without some unrealistic technological extrapolation.
It strangely feels like we are already part of this social science fiction (compare “Klara and the sun” by Ishiguro) as politicians advocate and campaign with placebo topics in elections and project us into some more happy past or future.
The social science fiction of Nathan Hill resembles for me the great utopian novel by George Orwell “1984” published in 1948. A title “2032” instead of “Wellness” could have worked quite well, as the first edition of Nathan Hill’s social science fiction was published already in 2023. (Image: Extract of: Lo Spagnolo, 1665-1747, Hecuba makes Polymnestor blind, MRBAB).
Question Tomorrow
« Tomorrow is the question ». This is the imprint on the 8 table tennis tables in the Martin Gropius Bau 2024. As part of the Contemporary art exhibition by the artist Rirkrit Tiravanija, the tables are very busy throughout the day and invite people to meet, play and greet. If tomorrow is the question, today is the answer. Is it? Maybe the answer is the day after tomorrow? Time appears to be the answer and the question. Such questions touch on basic philosophical questions about our relationship to and concept of time. Future orientation or even the belief in life after death touch upon basic religious beliefs. Intergenerational transmission is useless if there is no tomorrow or concept of tomorrow. Sustainability is most relevant if we are convinced there will be a tomorrow. Fatalists or warmongers rate today so much more than tomorrow that everything is subordinated to the urgency of now. Not easy to strike the right balance between „for now“ and „for tomorrow“. Simple financial discounting of benefits which accrue only tomorrow do not solve the urgency issue of behavioral concerns. My personal discounted value of ice cream tomorrow might be superior to ice cream now, but it is based on the tacit assumption that the shop still exists tomorrow or any other time in the future. The exhibition invites people not only to play table tennis but also to discuss the question of tomorrow across language barriers and across tables and cultures. 
Air Concept
Well yes, this is the latest fart in design and architecture. The Berlin International University of Applied Sciences composed an exhibition on “Air Architectures” which takes air seriously. The international group of 7th semester students took Air Architecture seriously and developed their ideas in the context of a curated exhibition. Nice semester project.
Air is a fundamental precondition for humans to (co-)exist. The biology of air (breathing) or the chemistry of air (fine particle matter) have been studied extensively. The physics of air flows in cities receive more attention as well in architecture. Interior design has yet a lot to contribute in the age of heat pumps and air conditioning.
Let’s think architecture from the perspective of air and air flow. Depending on our cultural background we might have very different associations with air. Indian or Chinese practices like yoga or Tai Chi teach us to take air more seriously than Western practices. Most architecture in cold countries of the northern hemisphere aim to keep air to the outside of buildings. Yet, the percentage of humidity of air is a serious concern of architecture as well. Air flow and quality then becomes a key issue of construction and architecture, somehow through the back door.
Maybe in approaching architecture we might think first of what is or has been the architect’s concept of air or aerodynamics. 100 years after the death of Gustave Eiffel and the Olympic Games in Paris, we still gain from thinking about air (not only air pollution) and its dynamics. Looking forward to the next generation of air architects.
(Image: Exhibition, Air architectures, at Berlin International, University of Applied Sciences 2024-12) 
Socioeconomic Circularity
Some sectors of the economy receive a lot of attention, for example sectors selling fancy cars. Other sectors, like the ones regrouped under the name of circular economy, receive much less attention and show up little in headlines. In fact, the circular economy is a great example of this. There are thousands of waste and rubbish collection, sorting and recycling centers, several hundreds of waste-to-energy plants, composting sites across the European Union. Of course, there is also a European Federation of the sector (FEAD). On the last FEAD conference in Brussels 2024 it became clear that Europe is finally waking up to the challenge of recycling costly raw materials.
The narrative concerning the sector needs to change further: what used to be subsumed as costly nuisance is in fact a potential profit center for companies and society at large. We do no longer want to import lots of raw materials from countries with dubious social and environmental records as part of our supply chains for raw materials. Time to act. This, however, is a rather complex socioeconomic challenge of circularity. The price mechanisms are not fully functional in most Member States, let alone across the EU. Additionally, the social practice to recycle varies greatly between countries. Distributional issues matter as well. It is rather obvious that dumping waste from one region/country in another one has huge implications (nuclear waste), but if one country values waste more than another one, due to innovative recycling techniques, the matter takes a marketable turn. Regulation should carefully distinguish categories of materials as we do for hazardous materials in production, consumption and for health and safety purposes of employees.
Metal, battery, cement, plastic and wood recycling pose challenges, but also opportunities to improve the European material import/export balance sheets. However, first in the circle of circularity is the use of materials. There we are clear that “less is better”. Less input of raw materials, most of which we import in the EU, reduces our dependence on other countries. This is the tricky social question of circularity. Mainstreaming of more conscious use and reuse of resources is a huge social issue, which we tend to relegate to a task for the education system. The awareness that supposed waste is also a valuable resource is spreading and the growth of the sector a business and employment opportunity for many. Circularity is the new sexy sector of the 21st century.
What have you recycled today? and myself? Well, scientific online publications. Now think of ChatGPT and the AI gold mines of 2024. There is lots of value in recycling.
(Image FEAD conference Brussels, 2024) 
Virtual author
« La Mort de l’auteur « . In a radical sense Roland Barthes was the first to proclaim the death of author as the sole master or mastermind of a text or speech. In fact there are many more on whose direct or indirect contributions a text is based on. However, biographical accounts of an author can only enlighten some (minor) aspects of the influences on the author and the final version of a text, (l’écriture), and the reader (lecteur). In « Le degre zero » the analysis of the different styles of Flaubert and Proust are extolled ( p. 131-139). Flaubert is characterized as the author with infinite corrections on the same texts and sources. It appears today as an endless loop of an algorithm where the stopping rule is not properly defined or implemented. Much in line with the « tabula gratulatoria » of Barthes (p. 279 of Fragments…, see image below) some AI systems return fake versions of a bibliography some readers will rely on.
In the 21st century l’écriture has become almost inexistant without the technical support of machines, but most of all artificial intelligence. The author is dead, long live the virtual author. The assistance of spelling, grammar and style editing from software programs has widened the spectrum of coauthoring. Editors take more influence through pushing marketing potentials of authors and their writings. Based on previous manuscripts and publications it is possible to produce hallucinations of an author whereby only the author might be able to identify the virtual authorship. At best AI generates first drafts, but similar to the linguist of Barthes, AI is likely to become another brother or sister of l’ecrivain (p. 139).
The thrust of Barthes is to highlight that there is more to a text than just the version at hand. In fact there are texts in a text or multiple versions or layers of a text. « L’enjeu de l’analyse structurale n’est pas la vérité du texte mais son pluriel » (1972, par ou commencer p.148). In conclusion, almost 50 years after the death of the author we currently witness the miraculous rebirth of the virtual author as the original deus ex machina which we always feared. Don’t worry it’s just another sibling of the original authors. 
Mind Paris
I have been asking myself what it may mean “to be in a Paris state of mind”. After a creative sabbatical spent around and about Paris I am happy to present the flipbook of entries on Paris in 2024 and the Olympic Games. My perspective is a social scientist’s view of public affairs. It builds on the many brillant minds and organizers who managed to make Paris a very special experience in 2024. Beyond the fabulous distraction of the sports events, which received sufficient attention, there were and there are so many exciting experiences that it is well worth speaking of a “Paris state of mind”. It happens in the quiet places of Paris, the museums, libraries, churches, parks and in the pedestrian areas. The 21st century has begun and Paris wants to remain in the top locations for modern experiences.
My flipbook for you to enjoy: Paris and Olympics 2024.
also as versions: size 16 MB Pdf-Version, best to read in even spread format over two pages on one larger screen (text left side, image right side), just as a suggestion.
Some prefer already the epub3 format (EPUB3) to jump from topic to topic and follow links in a comfortable way, but please do not print to save paper. THANKS, feedback welcome. 
On Organics
Organics are the new hype. Organics are everywhere. It is true in organic chemistry, biochemistry or pharmaceutical biochemistry we start from organic compounds as the basis for various forms of classification systems, structures and reaction chains. A search for organics brings you to Organic Farming and to lots of other applications of organic production as well as organic design.
The extended definitions highlight the foundation in biology and chemistry to then include any processes which integrate cyclical reproduction or resources and conservation of biodiversity. Based on the plurality of forms and connectivity of organic compounds this leads to a vast and diversified basis of carbon- and hydrogen-based life on earth. The ensuing complexity (variety of species) has been the basis for mankind to come into being. It is likely to determine also our survival in the long run. Organics is based on open as well as closed forms and therefore has an encompassing nature. Depending on time and space constellations (temporality) evolution has taken one or the other path. We are certainly not at the end of this evolution, although we through the loss of biodiversity we narrow down new potentials in an unprecedented way. Rethinking life on earth from a cell-based perspective of plastics and chloroplasts is a challenge, but it will lead us on towards the “organic turn” in the 21st century. 
On Uncertainty
Uncertainty is a catchword for all sorts of undetermined occurrences, which we might have to confront. We associate economic uncertainty with the difficulty to forecast or predict the economic evolution of key indicators like inflation, GDP, CO2-emissions, energy and raw materials’ prices and availability. Even factors like increases in greed of CEOs, psychological factors like insecurity about external or internal conflicts drive these macroeconomic indicators. Micro-level features of your own stage or evolution of the life course have an impact on and will be affected by uncertainty. Employment, housing, family, or household composition are subject to high levels of uncertainty. These micro- and macro- level factors are, of course, not limited to the domain of economic phenomena. Most recently, political uncertainty has reentered the international and national sphere with the re-election of Donald Trump as president of the United States. This election outcome of the U.S. is perceived by many as increasing the overall uncertainty due to the unpredictability of political decisions and even previous treaties with the U.S. or where the U.S. is a major partner in the agreement. These economic and political uncertainties are accompanied with a perception of growing legal uncertainty even in very personal spheres of life. Last, but not least uncertainty about climate changes like heating up of the planet and more devastating flooding and droughts contribute to increased uncertainty about future developments and the need to initiate adjustment processes and the financing of those.
The individual and societal ways to cope with increased uncertainty are one of the major economic, political, legal and social issues for the coming years. The answers are likely to be found in mutual, cooperative and risk sharing arrangements. The social in society will be a major part of dealing with increased uncertainty. 
(Image: Extrait of Paul Klee, Seiltänzer 1923)