The economic rationale of profit maximization privileges the construction and management of profitable connections. For train transportation this has spurred over decades the construction of new train lines between metropolitan cities or regions. Whereas connections between Paris and Brussels are abundant and expensive from central stations those living somewhere in between the 2 cities, for example in Mons, have had little chance of access to reasonably priced and fast train connections. This neglect of the in between cities is slowly changing. Sufficiently fast and reasonably priced connections allow Europe to grow together also at the margins. Public transport as alternative to car traffic across borders for „in-between cities“ will bridge the gap between the ease of travel between metropolitan an more remote areas. There is economic growth to be reaped as connected infrastructures allow for economic as well as social mobility and joint development. This is the real European challenge ahead of us and not the numerous summits without tangible results for rural and urban populations beyond metropolitan regions. For regions spanning countries, some will be finally reunited by better public transport a kind of ecological unification. 
Sustainable Food
Climate change has a severe impact on sustainable food production. The OECD reports annually on the evolution of volumes of production and monitors the resources and subsidies allocated to the agricultural sector of the economy. The sector and the whole nutrition chain are frequently perceived as a major driver of shrinkflation, greedflation and cheatflation.
Changes need to be introduced with a medium and long-term perspective in order to allow for smooth adaptations of the sectors involved and to avoid so-called hog cycles.
Most economic debate is focused on the quantity of production. The loss of production due to climate change and Russia’s war in Ukraine has been and continues to be substantial causing starvation and premature deaths. Another issue is the lower quality of food due to droughts. Repeated events call for adaptations. Certainly the adaptation of more resistant crops is part of the answer. However, the other side of the same coin consists in the consumer’s readiness to buy products that suffered during a drought. Just as the reduction of fertilizers and less water in the production of droughts reduces the size of fruit, for example, we, the consumers will be systematically challenged in our purchasing habits of fresh food.
Price-sensitive consumers will have to choose the products that have reduced prices due to drought quality loss. Other consumers may choose the drought affected product if a “resilience message” is attached to such products. Solidarity with climate affected farmers, just like bio-farmers’ products in ecological production, opens up another perspective to more sustainable consumption and farming. 
Existence as Eggsistence
Artists have their own ways of hallucinating. They don’t need an AI to generate ideas beyond the normal, even allowing for 2 standard deviations off the usual. As a result of the thorny question about your existence, Ram Katzir came up with the impressive statement about his „eggsistence“ being subjected to a squeezed experience. Ever increasing shares of the labor force would subscribe to this statement about the modern workplace. Each turn of the screw risks to crack up the egg‘s shell. Rather focus on the egg, try to get a grip on the screw. There are thousands if not millions who crack up under the excessive pressure of economic and political circumstances. The new platforms of food, grocery and parcel delivery at home have become the latest example of AI-assisted and algorithmicly managed screws. What is driving your eggsistence. It is about time to ask fundamental questions again. (Image: Eggsistence, by Ram Katzir 2021 in Brussels, Galilas Collection Belgium) 
Electronics repaired
The all electric society will have a number of consequences. We need to think about durable electronics. Many electronic appliances get broken rather quickly even by normal usage. The task to repair the beloved electronic gadgets of your children or simple electronic household devices reveals the fallacy of the consumerist societies. “Use it and throw it away, if it is not working any more”. This is the standard mantra of our societies. In order to save resources, we have to reuse, repair and re-engineer a lot of electronic devices. So far, the engineering process consisted largely in finding ways to assemble fast and with inputs as cheap as possible. The task of designing products that are repair-friendly, circular and allow to disassemble the product easily is a bit counter-intuitive to the consumerist society. If your juicer lasts for years, you will be unlikely to buy another more fancy one or even a connected one very soon.
Repair-friendly design and assembling will be the next generation products of the all electric society. Plugs, interrupters, relays and electric engines of older devices will be valuable after the original use in a household product, which has seized to function. Many parts can be put to other use. Re-engineering with sustainability in mind has an important function also in the move towards gaining autonomy again. For the repair of electronic devices we shall focus more on fine motor skills of our hands again. The shortages of electronic components to build cars after the Covid-19 crises and the disruption of supply chains for other reasons provide a good lesson to advance faster in the direction of electronics repaired. 
Defence Spending
As in research there are many dual use products, which can be part of defence spending. Robotics in production or rockets to launch satellites for telecommunication are such examples. Much less known to the public is the amount of military spending that goes into medical developments that benefit both the military as well as the civil population. Countries build a whole ecosystem round the provision of medical services for defence purposes , which consists not only of a sufficient number of qualified persons, but also companies that provide specialised products. Most of them have civil applications as well after minor adaptations.
Oxygen provision was a prominent example of a product that has civil and military uses in treatment of respiratory infections or contaminations. A mobile transportable operation table is another element of daily rescue services as well as potential use in situations of conflict, just like anesthesia machines. An increase in spending on such infrastructure and the necessary long-term training of persons operating and maintaining these medical applications take time and considerable financial resources.
The current debate in Europe and NATO neglects the considerable time delays in production and provision of the equipment. Research on “Skill Needs in OECD countries” has shown the substantial delays between sudden skill needs and the time to train high-skilled persons.
The International Review of the Armed forces Medical Services is a journal dedicated to publish up-to-date information on needs of medical products and persons trained to use them in special emergencies. The need to safe lives in extreme and dangerous conditions needs preparation of thousands of specialists. Of course we hope that such an incidence will not happen. The persons and material have an obvious potential to serve the civilian population in more peaceful times as well. The unfortunate “hog cycle” in skill provision is not a problem for dual use products or services.
(Image: edited extract of a mobile operation table) 
Corridorisation Connectivity
In some cities, “I love Paris” (Jazz Song), we admire the “breath-taking” large corridors, right in the centre of the city. This has been the outcome of the urban planning in the 18th century. Haussmann designed large parts of Paris with huge corridors despite the medieval narrow streets in some of the arrondisements”. Ease of traffic, fewer riots and representative housing became the new mantra of urban planning and superb boulevards.
In the 21st century it is about time to question the notion and social process of corridorisation. This has been accomplished in a paper by Fatima Tassadq et al. (2025). Modern infrastructure like fibre-optic cables, energy or water networks are easiest to deploy in urban spaces with large corridors than the complex narrow inner cities with supposition of different kinds of network layers. The grand ideas of the 18th century should be questioned from time to time and some districts that have escaped the corridorisation might well have a particular charm about them, maybe just because they seem to escape the rational approach of making and structuring space by means of large corridors. Large corridors separate city districts and they are a major driving force of gentrification.
The rationality of corridors has some roots in maths or physics of complexity. A recent paper by Shanshan Wang et al. (2024) reports the surprising finding that the transport corridors in several cities across the globe allow for a 1.3 times the distance of transport networks compared to the so-called direct linear “bird’s flight line”. Hence, corridorisation is (has been) a rather pervasively applied model of urban planning.
Alternative approaches advocate in favor of the 15-minutes walking distance city. All amenities like shops, schools, maybe work and services should be reachable within a 15 minutes walk. This does include “walking corridors” that facilitate (social) connectivity in inner cities. Cyclists also claim their corridors or fast lanes across cities, which underlines the pertinence to take corridorisation seriously and apply the concept with care.
In any case, social connectivity is key. The big social media platforms operate similar to the traffic infrastructure in the 21st century and provide huge corridors to knowledge and people. We only realize this once a service (for example tiktok) or the internet altogether gets disconnected. We have moved from (social) categorisation to (social) corridorisation as technology and rationalisation have taken the upper hand to structure our (social) lives. 
Cheatflation
There are many ways to study inflation. You may start by looking through your collection of bills. Economists like to swear by the consumer price index or indices, if you are even more into inflation. In textbooks like “economics for dummies” we learn about rational behavior and price adjustment mechanisms through the “invisible hand” to find some sort of equilibrium.
Advanced economics courses will teach you about strategic behavior inspired by game theory and the effectiveness/ineffectiveness of cheating. For advanced economists it is, therefore, inevitable that “cheatflation” should be part of the economists’ vocabulary. Of course, a profit maximizing entrepreneur is likely to way the risk of being found out contributing to cheatflation against the potential gains.
How to cheatflate? Too easy. Any producer of a product can cheat by using, for example, other ingredients than those printed on the product label, usually cheaper ones. Instead of fruit juice (wine) you may just sell colored water with lots of sugar (ethanol) in it, but still label it fruit juice (wine) and get away with this, until a consumer protection group makes a fuzz about it. A more sophisticated way is to sell investments in ESG-rated funds, but then include dirty stocks without proper notification in the fund, which probably increases profits based on wrong labels.
There is a specific quality to cheatflation, which makes it different from shrinkflation or enshittification. The drive to “obtain unfair advantages” through cheating across a whole country or region makes cheatflation an economy-wide process and subverts general fairness rules as well as trust in a society.
(Image Saccharometer, DTM Berlin 2024) 
Politician Cycles
In a bookstore which sells books in English or American language we find lots of biographies or autobiographies of politicians. As a politician you don’t even have to be out of politics when your biographical account or your own view is published, let alone be written. Publishers seem to hunt politicians who made headlines, no matter good or bad. Outside the EU you can always sell biographies at half price, if the volumes sit for too long on the precious shelves of bookstores. Most of the biographies are found in the history section of shops or libraries, however some show off in sections like politics (if not dead for too long) or in the business and management sections. Leadership is a big issue in the latter disciplines, but the psychological or sociological literature starts to meddle with the received wisdom of how single person leadership is in fact facilitated with the many great people around the sometimes outstanding single person. Maybe the focus on a single person is an easily understood and simplifying concept of leadership. In the case of Obama (2x) two single historical accounts complement the one person focus. In 2025 Michelle Obama skipped the funeral of Jimmy Carter where she would have had to sit next to Donald Trump (according to the Daily Telegraph and probably endure small talk). Politics appears to move in circles and politicians might find themselves encircled. 
Investment Disinvestment
Asume we live in a world of fixed amounts of investments. The option to invest in a new project or product will automatically reduce the amount of investment in another product. The investment decision, therefore, is subject to opportunity costs. A recent study by Naci et al. (2025) applies this rationale to the investment in new drugs compared to financing other traditional treatments. The results for the U.K between 2000 and 2020 revealed that the „quality-adjusted life-years (QALYs)“ is not in favor of the investment in new drugs. The relatively small numbers of beneficiaries of the new drugs is compared to the many other persons who could have benefited from the less costly previous treatment. Investment in one new drug causes disinvestment in other ones. The overall balance for the UK turned out to be negative. Particularly the disinvestment in prevention of diseases appears to have very detrimental effects in view of the results based on this study. Preventative measures are relatively cheap compared to the estimated 20.000 pounds for one additional quality adjusted year of life for a new drug. The message is: choose your health investments wisely to avoid ever rising health costs and health insurance. (Image: rest room Belgium) 
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. 