During the time before the “Zeitenwende” it was easy to visit the home of the composer Pyotr Ilyich Tchaikovsky in St. Petersburg. Therefore, we refer to our memory of the visit and the already 10 years ago restrained liking and appreciation of the Russian officials for the aristocratic composer, even accused to not be sufficiently Russian in his music compared other Russian composers. The composer had diverse love affairs, which were also not conform to official doctrines. The world wide success of his compositions, mostly known for his ballet music, remains popular in the 21st century. Similar to Beethoven, the biography by Malte Korff (Tschaikowsky, in German), highlights the final symphony as his masterpiece. The seems to be a reason to study “the last works” of composers specifically. The mature compositions appear to reflect on previous work and build or comment on previous work. The 6. symphony “Pathétique” was completed in his last year of his life, only at age 53. The final IV-th piece of it is entitled “Adagio lamentoso” and ends in very calm tempo and almost silence like a withering away heart beat. To my surprise I found a similarly very quiet ending in one of his early piano composition when he was only 28 years old “Romance Opus 5, Andante cantabile”. This early piece also ended “più lento” and from pp to ppp. (compare extract of image of notes below). 
Beethoven Home
The home of Beethoven in Bonn is nicely preserved and full of objects related to his life and his creative work. For the musician and composer musical instruments have accompanied him throughout his life. The visit of his home of birth offers a chance to dive into the extraordinary accomplishments of this great figure of the late 18th and early 19th century. His 9th symphony is strong as ever and the European anthem has just more than 200 years since the first performance now. The visit of the museum is still the highlight of Bonn and the App of the Beethoven House offers unique insights into and listening of his manifold compositions. Handwritten notes and a pocketbook of preparations for the symphony demonstrate the all encompassing nature of music for Beethoven. From romantic letters to the romantic music pieces, the museum has it all. Even it is a rather tiny house from the outside the inner life is as huge as it can be. It is advisable to take at least half a day for the visit much more than you would usually take for visit of a museum. The link between the biographical information and listening to linked musical pieces with a chronological context are a unique experience. This spurs the interest to listen or listen again to some of the romantic masterpieces. The App is great also to listen directly to some of the music.
Sovereignty of People
In France the judiciary has made an influential decision to ban a politician from the possibility to be elected after conviction of fraud. This is just what is to be expected from the 3rd power in the organization of a democratic state. It is surprising that there was a political debate about a person convicted for a crime to be eligible for public office. Several eminent scholars published columns in major newspapers to support the judicial decision. Pierre Rosanvallon focused both on the justification of the verdict and the constitutional role attributed to the judiciary to operate as a kind of memory of the “general will of the people”, the ultimate sovereign. In the struggle of power within a state the judiciary defends individual rights as well as moderates between the executive and the legislative branch. In the theory of democracy this creates a double bind situation in which the individual has a right to be defended against the state and individuals who ask for judgment of cases one against another one. Eric Halphen has also argued in favor of the often neglected role of the judiciary to stand up for the “general interest”, a notion which is not easy to define without historical references in each country and its historical trajectory of democracy. The short debate about the role of the judiciary has strengthened the defensive capacity of the French democracy. Other, even mature democracies may turn their eyes on the decision of the judges involved not to shun away from unpopular decisions. The independence of the judiciary is part of the sovereignty of the people and non-negotiable part of it.
Kids Gaming
The pressure on children and their parents is high to succumb to the temptation of digital and online gaming. Albeit there are many funny and learning alternatives for them if they are accompanied by an instructor to build or invent their own game. With some adaptations it is possible to assemble for example a coordination game for children which directs a small ball through a labyrinth. Add speed and tricky holes to the “parcour” and the race is on. It is little bit like hands-on physics as the speed and acceleration patterns across the parcour varies a lot. Planning, building and playing are an ensemble in this simple game. Probably also more fun than the x-th repetition of a digital game.
(Inspiration from: Berliner Kultur gestalten, workshops for children).
Owners Dispute
Renovations of housing with distributed ownerships can be a challenging experience. In Berlin you can find a few places with visible long-term disagreement about what kind of modernization should be done. More luxurious additions like balconies or triple window isolation and so on are sometimes hotly debated and contested in courts. For most buildings you cannot spot disagreements on the outside, but some constitute exceptions to this rule. One size does not fit all preferences. In a metropolitan city there is a place and a space for all such exceptions to the rule and most people after years do no longer think about such kind of diversity in preferences or budgets available for modernization. Cities put our level of tolerance to a continuous test. You probably learn to love this or eventually you leave the inner city. There are subtle differences in urban versus rural lifestyles. In the social sciences we continue to try to understand the attraction of cities as on a global scale millions of people flock to cities.
Spring Newborn
For many species spring is the time for newborns to enter into life. Pigeons in the neighborhood have completed the breeding phase and called upon the newborn to crack the shell open. Nourishment is already abundant in the surroundings and parents appear to be impatient to quit the guarding of their offsprings Time the next generation soon to take over a similar role. Pigeons don’t ask questions of fertility they reproduce in abundance of the environmental conditions are alright. Human beings are a danger for them as some feed them well, but others defend their territory, housing or living space against and intrusion. Compromises are not easy to accomplish. Fans of the song writer Georg Kreissler keep humming with dark humor: „Geh‘n wir Tauben vergiften im Park …“. The struggle for survival of species has changed in kind and we are more than ever before responsible for living conditions of other species as well.
Reinforcement Learning
Education scientist have embraced the change of focus form a front loaded teaching format to a focus on the learning process of pupils or students. Computer scientists have adopted this strategy in shifting from just knowledge data bases and predictions of likely next words in a sentence or paragraph to learning models. Deep Seek has surprised most large language models by its successful strategy to focus on learning and reasoning. So-called reinforcement learning is key to the programming of next generation AI models. Reasoning in most cases builds on multiple step sequences in answering a more complex question. The model then returns the answer and the steps (reasoning) applied. There is a debate whether summaries or translations of texts would need the reasoning function of AI models. Most of the time reasoning might not be necessary or even counterproductive, if the translation would try to correct an obviously faulty reasoning in a text.
Maybe, imagine also that an ordinary LLM would translate a text containing fake news. A correction loop which involves a cross-checking with reliable external sources like any encyclopedia or wikipedia would complicate the answering procedure of any text. However, this is a bit how the process of reinforcement learning with human feedback (RLHF) works. Reinforcement learning applies a form of accuracy reward, which guides the learning or answering process with checks against mathematical or programming accuracy. Just think of basic logic to be respected in the answer. Similarly, a formal accuracy control checks against mathematical models and ensures the answer is returning a text with a normal sentence structure or numbering of reasoning steps, an intro and concluding phrase, like we were all asked to do in school or universities. The amount of corrections from humans is reduced quite a lot and the computing resources are also only a fraction of the previous LLMs, which are retrieving answers from enormous databases or gigantic data factories consuming lots of energy in the processing of requests. Remember the movie on Kasparov, the world chess champion, who got beaten by a computer from IBM that did not only have a huge stock of previous games and tournaments, but could make judgments on positions and promising strategies to pursue. Don’t be surprised if a DeepSeek answer is superior to what our own mind and reasoning is capable of. Reinforcement learning is a learning tool, which we also may apply, if we deem it appropriate or just as one way of coming to an answer. (useful reference: Sebastian Raschka, Building a LLM from scratch, Manning).
(Image, ChatGPT, 2 humanoid robots are thinking and discussing how to repair a notebook which is sitting on a workbench). 
Housing renovation
The huge amount of buildings that need renovation is a task for each generation. New constructions are relatively easy to realize even to the best available standards. Particularly energy standards asking nowadays for serious isolation of buildings are easy starting from scratch. Energetic renovations of existing buildings are much more challenging and have to take into account the various stages or predilections of previous generations. Repurposing of buildings raise additional questions like transforming a family home into a representative office building. New technologies like fiberglass instead of copper cables or copper or plastic tubes instead of other hazardous materials cause additional costs and worries. The use of asbestos for interiors of previous generations has created the greatest liability for existing buildings. Technological choices of the past and also of the present (heat pump or not) have lasting consequences and sometimes even health effects. To cherish old buildings and styles is a mixed blessing as the renovation of housing confronts home renovators with more tricky challenges than building a new home. Incremental repairs might do the trick rather than all in one go renovation, however, you might enter into a situation when renovations are always on your mind. Not only the times are a changing, but homes are a changing, too.
Own Production
The 21st century has seen many innovations. Solar energy has been around for at least 3 decades now, but the wide spread application and adoption of it through consumers has taken quite a while. Nowadays you can buy a reasonably priced solar panel in your local shop selling gardening tools and home appliances. Solar panels have moved from a niche product to become an ordinary home enhancement product. Previously, the production of energy was highly regulated and restricted to business activities. Hence as producer and consumer of your own energy you became a “prosumer” of energy. Just refrain from selling the energy to your neighbors and you will be happy monitoring your own energy production and your energy consumption throughout the day as well. Suddenly, you might make a few behavioral adjustments to your daily routine. Throughout the day when the sun is shining bright you start to think of what kind of energy consumption you might want to switch on at the time. Charging mobile phones, cooking meals and washing are the obvious candidates that do the trick. Charging a battery of a bicycle(s) is also a good idea. The excursion of the evening or cycling to work the next few days is feasible with this as well. There is a slight danger to check the energy production frequently to optimize the return on your investment. In this case it might be expedient to invest also in a battery to store the energy for a longer time. No stress for consuming your nuggets, but initial investment costs are substantially higher, albeit prices for batteries have come down significantly in the last few months. “Prosit prosumers”. 
Biased Results
The use of statistics in presenting results of research is common practice. Empirical studies are summarized using statistics and statistical methods based on samples of bigger populations are cost efficient. However, care needs to be exercised when interpreting results to guard against inappropriate conclusions derived from biased estimates. Since the topic has been highlighted and methods proposed to handle them, these methods were deemed worthy of a Nobel prize. The basic problem of a bias due to a selective sample has been demonstrated by Stockwell et al. (2024). The authors investigate the old question, whether a little bit of alcohol consumption (per day) could be beneficial for our health. The statistical issue which needs careful examination is the construction of the control group against which the results are compared. Apparently many studies have biased control groups which included persons in the not drinking control group who had stopped drinking for bad health previously. Compared to those persons with other health conditions those drinking a little bit compared rather well. But of course such individuals should not be present in a control group. Of the control group is biased due to many persons with below average health the groups of interest consuming higher levels of alcohol do not perform so badly. Hence, interpretation of results from medical or social science studies has to consider carefully the actual or potential sources of bias. Not really a new results in statistics, but still not well known or understood by the public at large. Drug consumption as well as studies of this consumption could deserve the same sticker: handle with care. (Image: Extract from Tenier II David, Les fumeurs, also entitled Chanson à boire, 17th century, Paris Petit Palais).
Sun power
Statistics of hours of sunshine in Germany and many European countries show an extraordinary amount of sunny days in March 2025 compared to previous years. This opens up a window of opportunity to produce electricity already in a month previously less likely to yield a lot of energy. With more likely 8 months of decent electricity production the efficiency of investments in solar energy reach break even points earlier. Time to think of expanding the share of renewable energy even further. The cost effectiveness is improving in rather unpredictable ways. Economists, of course, consider opportunity costs in this case the alternative to use oil or gas despite the higher levels of CO2 emissions. As the prices are currently lower as well, without an easily predictable trend, solar alternatives are a valid option. 
Retirement Plans
There are debates about the best organization of retirement. The major fault lines lie between public pension systems and systems that are built based on mainly private provision. Retirement plans in either system are subject to constraints. The recent stock market turbulence has increased the amount of uncertainty people face who invested in 401K plans in the US. Some had to take an unannounced hit to their retirement savings due to the loss after Trump’s back and forth policies on tariffs (OECD Pension Outlook). High volatility of stock market prices creates an additional constraint that you are less inclined to retire when your retirement investments have overall a reduced value. You are a bit at the mercy of capital markets even in your retirement decision, irrespective of the difficulty to predict what your retirement funds will yield as returns. Quite an important lesson to keep in mind when comparing retirement systems in OECD countries. It has been all too easy to blame public pension systems for maybe lower short term interests on pension savings. Being subject to an American president concerning your retirement plans is probably not what many countries would like to have. Trump’s choices on tariffs may have consequences we did not expect to affect us so directly.
Tariffs Trade Deficits
US Tariffs target the US trade deficits across the globe. For a start on the topic it is helpful to take a look at the data. The US bureau of census publishes this time series regularly. Currently, you can compare monthly or annual data across countries from 1985 to 2025. The worsening of the trade balance is obvious just looking into some examples like trade with the EU, China, Japan, South Korea or Switzerland. we might calculate some rough indicators of trade deficits of the US with countries by the size of the country, which would make Switzerland look really bad relative to many much more populous countries. This probably explains why Switzerland is threatened by higher tariffs than the EU. However, this hints towards the “hidden” agenda of tariffs on countries. The major targets are multinational companies that produce in countries outside the US and particularly in those with low corporate taxes, like Ireland and Switzerland. Importing products from such countries worsened the US trade balance over decades.
Another factor to study more precisely is the sectoral pattern driving the trade deficits with countries. Exports in for example health-related products have soared due to Covid-19 pandemic starting in 2019. Where did the US buy face masks, ventilators, medicines and pharmaceuticals? These countries will now also be penalized by higher tariffs. The tariffs topic is a complex interconnected business issue, which is not solved by blunt measures. The real danger is that with each month trust in US will erode further. For decades this has been an underestimated currency of international business. Eroding trust is likely to be the major fallout of the tariff and trade deficit nexus. It takes decades to build, but can be destroyed within a few days or weeks. (Image: Mont des arts Brussels February 2024, celebration of surrealism).
Deus DEI
In Latin the declination of deus = god starts with the genitive form “dei”. In the world of universities and labor markets the abbreviation “DEI” stands for diversity, equity and inclusion. These 3 topics have ensured for years that a university campus looks a bit more like society at large, even if biased towards younger generations. The MAGA saga of the USA in 2025 starts to turn the clock back on hard to accomplish advances in DEI-hiring and promotion. This likely to reduce the number of international students on US campuses and will make campuses look WEIRD again. Moreover, lots of talented students will seek DEI campuses in other countries to avoid discriminatory hiring practices and arbitrary risk of visa denial. Europe is likely to benefit from this kind of brain drain and skill shortages might be substantially reduced due to such unprecedented shifts in US policies. The cuts of billions of grants to renowned universities for political reasons will leave a yawning gap of talent in the US in a few years time, the latest. Early movers will move very quickly to anticipate the exodus of talent. It is puzzling to watch how quickly years of DEI policies might be undone with thousands of people and projects at a loss. Scholars of American history are reminded of the McCarthy era of political prosecution or the dismal period for science under the Nazi-rule in Germany. Americans seem to get much worse and extreme policies than they thought they voted for. “Deus Dei” also means “god of god” and in the current American political context the judgement of a god by another god has maybe a historical meaning. In the table of the Estonian town hall in Tallinn the inscription alerts rulers to beware of being judged as well. Sounds like a timely reminder to overly ambitious politicians. 
Warming consequences
The live of honey bees is rather busy and well organized. Global warming necessitates new risks and new opportunities for honey bees. 
The flowering season starts earlier in Europe and bees start earlier ro their collection of nectar and their service of pollination to other flowers. In early April 2025 in France near Paris we observe wild bees already in their daily routine. However, the risk of cold nights is still there, albeit those building their homes below the surface are a bit less at risk during a frosty night. Seeking a clever shelter is a good strategy for survival particularly at times of global warming. Some kinds of wild bees seem to sense this already changing homes from one season to next one. Humans remain their toughest enemies as they restrict their choices quite severely. Man-made pollution and herbicides are beyond bees’ control and cause havoc in the ecosystem of bees. Apiculture is an interesting science also for social scientists as this forerunner species of the matriarchy has evolved into a well-organized productive society. They are a bit harsh to each other and communication is rather unidirectional, but an interesting social cosmos of its own kind.
Value destruction
The destruction of economic values as they are embedded in quotations on national and international stock exchanges has reached levels after the US tariffs announcements of unprecedented levels. Only the banking crisis had reached similar levels and bursting speculation bubbles. Whereas professional investors might have seen this coming, the normal small investors who had hoped for a positive effect of Trump’s economic policies on shareholder values, which occurred right after the election has been wiped off already. For those people who rely on stock market investments for their pensions have to digest heavy losses now. The second round effects of reduced consumption of pensioners who have lost 10% of their retirement savings will further aggravate the situation for this group of people. Paired with higher expected inflation the economy will be forced into a recession caused by Trump’s tariff announcements and enactments. As this will lower prices of oil and gas as well as other raw materials, his electoral base of tycoons following a « drill baby drill » device experience also losses. A lot of damage all around him leaves millions of people in the US with losses to digest. Probably even more across the world, particularly in the poorest countries of the world. Such a real world macroeconomic experiment is like playing poker on a global scale. However, many countries may build new alliances that may wither the storm better than Trump anticipated. Hence, the game of poker will reenter economic textbooks again in addition to game theory and maybe chess strategies. (Image winter sunset). 
Time Horizon
For ages human time horizons have worked as a succession of generations. With substantial population aging we have many more families where we find 4 generations alive at the same time. In nature and with respect to biodiversity the sequences of renewable have not changed much. Old trees that have been cut will take another 100 years to grow old again. Wild fires or human negligence risk big in this respect. Forests take several human generations to grow and thrive. Diversity is key there as well as many fast growing monocultures have increased risks in case of fires caused by global warming. Annual inspection of a forest that suffered a severe drought and fires is still looking dismal compared to before. (Foret de Senart, France 2025).
Rich richer
The US economy under Biden had continued to make Americans richer. In an article by Talmon Joseph Smith in the New York Times from 2025-4-3 p. 7 the puzzle that Americans have grown richer, but don’t feel it, has been well explained. The large share of households owning their homes albeit with mortgages from low interest periods have witnessed their increased wealth. However, inflation is eating into their cash available for daily purchases. With another round of tariffs and additional inflationary pressure caused by those, the average person or household doesn’t fell much better off than some years ago. Economic anxiety and our preference for loss aversion or loss avoidance make us react with consumption restrictions to prepare for increased risks as well increased uncertainty about the directions of the whole economy and our very private wealth and consumption patterns. How and when the US economy will get back on track remains to be seen. Higher uncertainty usually reduces investments and with increasing interest rates again the economic recovery might be protracted. The NYT p.7 cites business owners with statements like “we’re not putting our foot on the brake, but we’re taking our foot off the gas.” Betrayel of working class people due to rising unemployment after 3 years of very low unemployment is likely to widen wealth gaps in the US population even further. The rich will get richer, but at high costs to the population as a whole. (Image: ceiling painting in Petit Palais, Paris). 
Intimate housing
The housing of famous persons has always attracted a lasting fascination. The “esprit des lieux” or the experience of the surroundings of an artist, composer, author or otherwise famous person, where most of the work had taken place is of general interest. In today’s language we would describe this as the context of creation. Biographical information and references to specific objects central to the process of creation play a crucial role in understanding what is behind human creation as it is district from AI. There are objects ( compare MAD Paris) and there are the social networks of creators. Modern biographies include both, some even in graphic forms similar to ancestry diagrams.
The design of intimate living spaces for private life or the adequate environment for creativity are becoming more clear with the consciousness of the importance of dedicated designs of furniture, accessories and even scent. Our brains are multimodal and working as well as processing lots of information even beyond our conscious realizations. This black box of creativity is rather unique to the human brain and AI will probably take decades to emulate such complex processing. The MAD exhibition reveals that intimacy is also related to housing design and interior design. It doesn’t seem to be a random process, but habituation is part of the continued creative process.
Private Intimacy
Intimacy has been reserved for private affairs for centuries. Although in the medieval ages formally the right of so-called noble men could be very far-reaching into intimacy of families when the permission to marry was quite restrictive. The private intimacy is the central theme of the Paris exhibition at MAD (Link) « Private Lives ». The organization into 14 almost private rooms around a larger center piece on design leads us through the major topics of intimacy. Maybe as a surprise to some, the exhibition starts with the major actors of change related to privacy and intimacy, i. e. women. Opening up enclosures gave women more room for intimacy and at the same time it made intimacy a conscious choice and decision. “A room of one’s own” is an important step in personal development of children particularly with respect to one’s intimate life. Restrooms are another issue of intimacy, just consider recent adaptations tor m/f/d people. A whole set of accessories are on display which previously were intimate products or even secrets prepared for public viewing. Of course odors are part of the experience with a test space of noble perfumes. The various manifestations of sexuality has brought about a growing number of pleasure objects, which might also be criticized as a growing commodification of intimacy as well. The connected bedroom and the risk of surveillance are raised to warn on overexposure on social networks. Intimacy in prisons or community shelters closes the exhibition before the final highlight the room on “conversations with oneself”. A whole literary form of keeping an intimate journal has arisen from the conversations not intended to be shared with others, at least not during one’s lifetime. After a person’s death for some persons of public interest even their private intimate journals will be published shifting the balance between the private and public parts of intimacy. (Image below from exhibition, photo bottom left, Matisse painting on wall while in bed in old age).
Intimate change
Society changes and with it so does intimacy. The major changes pass through the behavioral changes of persons and sooner or later the whole society adopts such changes as the new normal. Trends of individualization have moved over centuries as the exhibition in the Museum of decorative art (MAD) in Paris demonstrates. At the same time the changed individual approaches to intimacy have become more widely spread quickly over time. Social media have accelerated such new trends again. Social class is yet another intervening variable in this context which created different speeds of adjustment as well as sustaining differences in kind.
Religious beliefs and practices have made claims about how individuals should handle intimate relationships and affairs. Legal issues are defined by each society to guide moral practices as well. Hence, the sociology of intimacy is a huge topic and comparing societies an interesting topic. The development of intimacy over a person’s life course, however, is given little attention due to a lack of adequate longitudinal data. From the exhibition we are encouraged to think about the relationship of hygiene and intimacy. Bathrooms accompany us throughout our lives and privacy was originally a bourgeois concept. Over the life course we move from dependency to independence and maybe dependency again in very old age. The images (below) from the MAD exhibition range from basics of bath tubs to a painting of Edgar Degas in the background. Instagramer or YouTuber share lots of images and stylized arrangements of bathrooms on social media. It seems that intimacy is moving further into the public domain.
Journalists Scientists
In the theories of democracy journalism has entered the stage mainly in form of a controlling mechanism that is part of an extended checks and balances system of democracy. Independent journalists serve as effective multipliers and critical commentators which are an essential element of a well functioning democratic society. Social media’s ability to reach large audiences without adherence to independent journalists’ principles pose challenges to the way journalists are perceived by the public. The border between journalism and influencer marketing of products and opinions is continuously under pressure. Voices not heard, underrepresented or those with few resources for large scale communication face difficulties to communicate their views in a market flooded with information and marketing.
Another challenge to journalists is the fast evolution of scientific research and knowledge which at times derives from complicated theoretical and/or empirical methods. Hence, the relationship between journalistic reporting and scientific rigor and need for details in reporting are hard to reconcile. This necessitates a continuous dialogue between scientists and journalists to be aware of potentials and limitations to the co-evolution of the two disciplines. In order to avoid a self-referential subset in each discipline, the demonstration of successful cooperation between the two disciplines reveals the complementary role in many real-world instances. Investigative journalists often rely on additional scientific expertise and scientists who uncover manipulations of any sort in their work have to cooperate to inform society about the topics. As with global warming or PFAS risks scientists get drawn more and more into the checks and balances role within democracies. Therefore in addition to the separation of powers claimed in the political literature of the enlightenment (executive, parliamentary and judicial) we added already the 4th one of journalism and should include (5th) independent scientific research and reporting into the essential principles of well functioning democracies. The conference at the BNF in Paris on the 28th of March has raised these timely questions in the best tradition of the ongoing process of enlightenment. 
Body Soul Membrane
The 40 art works from the Pinault Collection on display at the “Bourse de Commerce Paris” deal with a depiction of the body and soul in the broadest sense. The range of works from paintings, sculptures and video installations is impressive. The link between the body and the feelings or emotions is obvious. Contexts leave deep impressions on bodies and frequently embodiments do not fit emotions. The membrane between the two instances creates an additional barrier or chance to align both instances. Racism and discrimination are recurrent topics in the exhibition. This makes the exhibition a welcome antidote against the increasing risks of violence in many societies. Artists have a subtle emotional connection to suffering of people and their art work does not shun away from confronting us with violence experienced by large groups of society. Body and soul membranes are also an internal or intimate affair, which words can only address with difficulty. Many artists therefore chose other ways than writing or drawing to express or cope with this reflexive relationship of body and emotions. We do not leave the exhibition unmoved, maybe even a bit unsettled in our emotional state of mind. Our own membrane might be moved or become unbalanced after the visit.
Tariffs trumped
Economists are used to differentiate between micro-and macro-level effects of tariffs. For each buyer of a car, import tariffs raise expectations about prices for a product. Many consumers will then decide to buy lower quality at the same price or postpone buying a new or replacement product for some time. For cars it might mean that many people will then decide to buy rather later than sooner. If thousands of people do so, the market will fall into recession overall and it will take months or years to come back to the same or a higher level. A political economy perspective has taught us that eager politicians are in favor of a short recession immediately after an election which increases the chances of reelection once the economy gets back to normal or catches up on lost growth.
The US under Trump apparently gambles with such an economic rationale. Short term inflation is already rising, interest rates stay high before the upheaval caused by tariffs stats to settle.
There is, however, another alternative mechanism at work as well. Torsten Veblen long ago hinted towards what is not called in economics the Veblen effect. Some fancy cars for example can raise prices well above others because of their cleaving image. Just because they get even more expensive the buyers of such products gain additional attention as part of a social class which does not have to care much about their additional spending. The consequences of tariffs will most likely widen the gap between those saving dearly and those able to splash out cash despite increased tariffs. The most felt consequences, therefore, will be on social inequality within the US. 
Design skills
The is a huge B2C or C2B market in connection with home design and adaptations. Nowadays people are inspired by instagram, pinterest, YouTube and TikTok. Additionally, many play around with Apps to create their own images of how they would like to arrange or rearrange their home. Some have taken first steps to include measurements of their home in the design. The compatibility with professional software of the construction sector, however, is a drawback that delays or leads people to go to enterprises that take into account the prior efforts of young lay designers. It is a little bit like an own contribution in home building quite popular among new home builders to alleviate the upfront cash needed for first home acquisition. The younger generation could offer some of their “digital native” skills to bridge the gap in construction and home design. Of course, reworking and precise measurements on the location will still be required as construction has a lot of legal liability issues involved. Cooperation is a form of burden sharing to advance faster and/or with lower costs. 
Bricks and algorithms
Construction as an economic sector has suffered for decades from skill shortages. The PWC study on skill needs in construction and management of digitalization in this sector shows various deficiencies. Labor demand in excess of own training efforts in the related professions is further increasing in coming years. Migrants from across the world have come to Europe to fill the skill shortages and willingness to work in the sector. Population aging increases demand for adaptions of housing and tertiarization of the economy asked for new office space and adaptation of existing ones.
The skills involved in construction have also evolved. Digitalization and understanding of new technology needs of modern housing increased the level of cognitive skills in the sector enormously. “just let the liquid concrete flow” will no longer suffice. Environmental obligations, renewable energy and design issues had an impact on the sector.
Many enterprises in this sector have trailed other sectors to adopt strategies like digital pairs of a building or connected manufacturing of facilities with data sharing and compatible software. All this led to the fact that younger employees or university graduates (m/f/d) have preferred other sectors. IT development and applications are interesting and challenging in this sector as well. Logistic arrangements a formidable task as well.
The claim of too much bureaucracy is just an excuse for lacking digitalization of the sector. Years ago we stated that every task you carry out more than once can be automized. With AI in construction digitalization starts with each singular case as a learning occasion for humans and algorithms supporting us. 
Guidelines Follow-up
The are many professional organisations which agree after thorough discussions on guidelines how to conduct professional services. As long as we have such guidelines, the adherence to the guidelines is an issue as well. This is part of a research program of organisational sociology, but there is a rather strange paradox in this field of compliance with guidelines. In the most highly educated professions like medical doctors, the rate of compliance to guidelines is below average. A study of 20+ years ago published in the JAMA Journal: Cabana et al. (1999) “Why Don’t Physicians Follow Clinical Practice Guidelines?” highlighted this paradox among medical doctors. The lack of awareness of existing or changed guidelines is one of the major reasons mentioned in this respect. Self-efficacy is also an issue, but mentioned less frequently for not following guidelines.
Besides a professional bias, related to the above average educational attainment of physicians, (believed) superior coping mechanisms compared to the average population might be at work. Mastering advanced technology might lead to a behavior that assumes to be able to handle higher risks as well.
For a profession that is used to confront issues of life and death on a regular basis some adherence to a very specific medical guideline might appear a negligible risk. However, maybe comparable to some cases among politicians or priests a logic: “rules or guidelines are for others to follow” rather than the physicians bear obvious risks to these persons themselves, but even to others in specific circumstances like the spreading of infectious diseases.
Drug or substance abuse has been evidenced before in relationship with specific professions or in historical time periods. We should take care to repeat similar studies (Cabana et al. (1999) every now and again.
Augmented Cognition
With everybody talking about artificial intelligence we tend to overlook recent advances in augmented cognition. Just 2 examples of studies presenting new findings published in 2025 suffice to make that point. Automated versus manual driving have different effects on our brains. Automation makes us sleepy and inattentive with potentially dangerous consequences. Using EEG measures of neuromarkers the drop in attention shows up earlier than through measures of keeping one’s lane while driving. For jobs or duties that involve extended hours of attention the wearing of a mobile EEG-device could avoid lots of accidents. Drugs, alcohol or medication abuse would also show up before it is too late, I suppose (Scanion et al. 2025).
The 2nd study involved a robotic assistance to piano playing which achieved surprising training effects for learners of the music instrument. Objective measurement of speed and finger coordination might even allow overall accuracy to improve significantly. The technology around us and the one in direct contact with us, our behavior and performances shall have an impact on all of us sooner or later. We have to pose the question of how far we want to go along with these evolutions. Augmented cognition will not only be of interest for civil purposes, but military applications or dual use is evidently another option.
Aufklärung Enlightenment
The period of the enlightenment is a historically defined time period of the late 17th and the whole 18th century. Although often associated only with Europe as its origin, the American contributions and influences have been far-reaching as well, just thinking of the “Declaration of Independence“. This historical period is, however, most interesting through the unrivalled contribution and pivotal point to the history of ideas. The exhibition and catalogue on the “Aufklärung – Enlightenment” by the German Historical Museum in Berlin exposes many of the historical editions of books that “made the enlightenment”. Philosophical writings and readings (Immanuel Kant: Kritik der …) of the period (especially in German) are tough even for native speakers of German, unlike reading of French (e.g. Jean-Jacques Rousseau) or English (e.g. John Locke) contributions to the enlightenment. Maybe this is already one of the reasons why in France the revolutionary ideas were put into practice through population-wide political movements.
The historical period of the enlightenment came to a close in the early 19th century (1806 another pivotal year). The English or French terms of enlightenment or lumière maybe be interpreted in a way that other historical periods like the medieval ages were periods of darkness, even later periods again did not live up to the idealist prerogatives of the evolution of humanity. The German term “Aufkärung” has its etymological roots more in the action associated with “to enlighten”. This hints at the continuing process of the ideas of the enlightenment in modern terms the process of individualisation, tolerance and autonomy.
There many valuable short interviews shown in the exhibition and Jürgen Habermas contributed a short closing statement to the catalogue of the exhibition on the unfinished project of the “Aufklärung” inviting us to continue also with the “Kritik der Aufklärung”. After all the enlightenment did not save us from repeated events like “Apokalyses“.
(Image: Émilie du Châtelet, below book on Newton Physics in DHM Enlightenment exhibition 2025). 
Apocalypse Depicted
At the beginning of the 21st century we have a renewed interest in depictions of the Apocalypse. “L’Apocalisse di Giovanni” has been illustrated in various Christian monasteries and some traveled quite a bit. The version of the Apocalypse (Link) which was attributed to Cambrai is a copy of the older original version found in the City library of Trèves, which dates back to the year of about 825. A flemish version of the 16th century is to be found at the BNF in Paris. Throughout the centuries the “Apocalypsis”has been reworked. The version of Trèves has the “carolingish” depiction characteristized by a presentation of image on one page and text on another page. Nowadays we are used to futuristic images and have known even worse experiences of apocalyptic events (Nazi terror). Earth quakes or man-made climate change with heating of the planet, storms, draughts and floods testify for the renewed interest in the Apocalypse. Other man-made technological innovations like rockets. atomic bombs, chemical and biological weapons overshadow even the “natural” ones. The potential of AI to cause destruction is not fully assessed until today. Swarms of drones guided by AI might reach apocalyptic levels as well. We just remind ourselves of the bombing of walls of a water reservoir by Russia in Ukraine. The Apocalypse will remain the original example of a horror story and our strange fascination for such texts, images or movies is likely to stay. (Image: extract of anonymous 1st quarter of 9th century. Trier Stadtbibliothek, Schatzkammer. Wikipedia public domain).
