Outdoor Pleasures

Summertime surely is time for outdoor activities and pleasures. Besides the broad spectrum of more or less strenuous activities, summer is perfect for socializing in parks, restaurants, cafes or beer gardens. We might think of this as more recent inventions, but in historical depictions by Bruegel or Jan Steen (1661 in Gemäldegalerie Berlin, extract below) we find evidence that socializing in a restaurant or beer garden has been around for more than 460  years. Monks were brewing beer and the consumption was reserved to a more elitist group of people. The concept is quite old. Fortunately, we have managed to democratize the joyful and socializing part of being together.  Places where people from different social classes come together have always been rare and this, additionally, varies across regions, countries and often social strata.

Jan Steen 1661 Gemäldegalerie Berlin beer garden

Heat Mortality

Heat waves can be deadly for humans, animals and vegetation. According to the cumulative estimates by the RKI (Robert Koch Institute) in Germany up until 2026-7-26 there were 11.900 deaths within the confidence interval between 10.700 to 13.100 of the estimates. About 6.000 of the people who died due to the heat waves were aged 85+. 1.140 were attributed to persons younger than 65. Chronological age appears to be a significant factor as frequently chronic diseases accumulate in older individuals as well as poly-pharmacy. Hydration levels and deficiencies are associated with the increased mortality, but we have few or no precise measures of hydration readily available for people before it becomes an emergency (cognitive impairments). We know a lot about precision medicine. However, precision hydration for people remains rather arbitrary. 

On graveyard inscriptions

Fountain of youth

The fountain of youth is such an old dream of humans that we are no longer surprised to witness perpetual reincarnations of the same theme again and again. The painting by Cranach the elder (1646) “Fountain of youth” (image below, Gemäldegalerie Berlin) sets the scene for what has become a billion dollar business nowadays. Whereas the old dream was about rejuvenation and cure from disabling diseases, we have become a bit more moderate in ambition to be happy about a halt to aging. Promises are reiterated and made in building on an army of influencers who push many remedies that lack rigorous scientific tests. Two studies published open access in “The Lancet Healthy Longevity” (Witham, McDonald 2026 and Duremdes Nava et al. 2026) provide evidence that in case of obesity and diabetes there are no easy or quick fixes available yet. Healthy longevity still relies mainly on lifestyle (changes), more exercise and careful nutrition rather than additional medication. Medium and long-term consequences of inactivity and unhealthy diets are to easily disregarded or their value discounted. How much are you willing to pay for an additional year of healthy living at age 30 or 70? Simple economics, but quite a successful business model as well.

Medication adherence

In the broad range of medico-pharmaceutical science the topic of medication adherence is an uncomfortable issue. In the ideal scenario people would adhere 100% to the prescription. In the real world of not-optimal behavior and circumstances, people deviate substantially from what is best for or even good for them. Even in the tax-based health system of Denmark with relatively easy access to medication, a long-term study revealed the difficulties encountered to adhere to essential medications for persons with Type 2 diabetes. Nielsen et al. (2026) analyzed a cohort of 80.000 persons who newly acquired Type 2 diabetes of which about 25% showed a low adherence to medication plans with hazard rate of 1,27 to suffer a cardiovascular event. High adherence persons did not suffer such an event in the following 220 days over the 10 years of observation. A sedentary lifestyle or obesity increase the risk of type 2 diabetes and beyond medical treatments additional behavioral challenges like medication adherence make it clear, we do not live in the best scenario to fight type 2 diabetes.

Stinging issues

Sometimes a topic can make it into the headlines only if it is a stinging issue. The fact that certain mosquitoes travel and survive further north due to global warming is indeed such a stinging issue. As the living conditions for mosquitoes depend on warm weather conditions particularly during (tropical) nights as well as water availability for breeding purposes, the spread of mosquitoes can already be observed studying the spread of dengue fever, malaria and chikungunya in some southern European and American countries. Climate change, especially the warming parts of it,  shall bring home a number of stinging issues and consequences to people who didn’t seem to know or care about the spread of spread of infectious diseases.  

Green land in summer between Priesterweg and Südkreuz Berlin 2026

Social learning

The process and mechanisms that drive social learning are still not well understood. Beyond social psychology and sociological theory and evidence, neuroscience has made progress worth taking note of. The paper by Maciej Winiarski et al. (2025) offers a key insight into the neuro-biology of learning about social structures and the behavioral consequences. In their study of mice in the EcoHAB supervised group housing, information sharing through scent was the driver of learning about the social structure and the ensuing social behavior. The various experimental settings show that 1-2 mice became the most relevant informants about social structure and rewards. The “exploratory activities” are an interesting underlying parameter as well. The mus musculus model does not tell us much about humans yet, but we get a gist of important factors to consider for social learning in groups or organizations. Information seeking, informants, reward structures and “housing” have to be considered based on such research from neuroscience.

Berlin bears as statues decorated to demonstrate freedom and diversity in 2023

Road injuries

Road injuries are a serious matter. The lives lost and people suffering from lasting injuries continue to be a major health hazard on a global scale despite significant reductions over the last 3 decades, mainly in wealthier countries . The Global Burden of Disease study (Ng et al. 2026) shows that between the ages of 10-39 fatal road injuries are the main cause of death for young men. The study has no data to speak to causal effects, but the basic statistics show a clear pattern according to gender. Several factors need further exploration:
1. Men are known to have a much larger share of the total amount of road traffic in most countries, which leads to a higher risk exposure.
2. Men seem to take higher risks when driving, which puts them at higher overall risks as well.
3. Responsibilities for road incidents are not investigated, which leaves other causes or contributions to road injuries (like alcohol or drug abuse) unaccounted. (Source: Ng et al 2026. Global, regional, and national burden of road injuries 1990–2023, p.7)

Cardiac arrest detection

The number 1 cause of death is cardiac arrest in the modern world. Hence, the interest in the detection of cardiac arrest could save many lives. For assistance to arrive and intervene in time an alert needs to be issued as soon as possible. With early detection by nearby persons and skilled intervention the survival chances are about 50% of cases. The “silent” at home cardiac arrest is an important health and survival issue. The availability of wrist bands and watches which can issue alerts in combination with smartphones has risen considerably in recent years. Therefore, the improvement of reliable algorithms which interpret these data can realistically save lives as the delays can potentially be shortened for professional helpers to arrive. The study by Edgar et al. (2026) tested such a device and were able to show the very low number of false alarms issued by this device (about 1 out of 40). Extrapolated to millions of cases the challenge to a health care system is steep. However, we have to deal with such socio-economic issues of digital devices in medicine in the coming years more often.

Fuel fertilizer food

The state of world affairs can be summarized in relation to these 3 factors. Fuel, fertilizer and food are the subjects of the hotly debated or even contested resources. From a United Nations perspective the progress in human and economic development hinges on these 3 key issues. The logical order of the Fuel, fertilizer food triad starts with the costs of fuels or energy more generally and leads to the production and distribution of fertilizer across energythe world. This chain of supply determines the quantity of food available to feed the world. Russia‘s war on Ukraine territory has made this logical sequence obvious again. Millions of people were suffering due to the fuel, fertilizer and food shortages due to excessive price hikes. If we add speculatove rent seeking to this we have a scenario where the global South is suffering due to political contests and wars in the North including the Middle East. The current governance structure of the United Nations is largely unable to address this triad adequately. Fair processes of decision-making, control and implementation are crucial in this respect to ensure that all regions independent of economic spending power at sufficiently represented at the international negotiations about fundamental resources. Minimum levels of provision are necessary, even if not sufficient, conditions for our humanitarian responsibilities.  

Inclusive design

In aging societies inclusive design is not an option but a must have. This is neither a short term fix nor a renovation without costs. Adapting a home to a wheelchair use is an expert job as you have to think about issues you have not experienced yourself before in most cases. Door thresholds and openings, better have sliding doors as much as possible, have to be considered early. Bathroom adaptation in size and height, toilet space and lighting switches all should be planned ahead. There exists a DIN Norm 18040 which specifies measures precisely. In the age of AI-vibe coding some home appliances could be programmed to follow a person’s voice commands as well. For the time being in 2026-7 this is a nice to have option. but early installations of “intelligent digital devices” beyond a washing machine or microwave can get you quite far in the near future. Inclusive design could open doors and switch on lights simply by talking to your smartphone.

Water pleasures

Maybe some of us associate water pleasures with the splendid fountains in the castle of Versailles (France). Our daily concerns, however, are much more about making cities more resilient and able to cope with water scarcity. According to a study by Krueger et al. (2025) the user perspective and behavioral challenges that go along with saving water by end users has been neglected for years. Water management in cities is part of the infrastructure package that has to be managed efficiently. Aging water distribution infrastructure is just as much a problem on the supply side of water as consumption has its (increasing) price on the users side. Rainwater capture, re-use and recycling are promising alternatives to simply providing more water. Pollution is, of course, another hazard that needs our attention. In the meantime we may think of water pleasures for all including the animal world.

Berlin moves it

Yes, we like to move it. Investment in infrastructure follows a long-term economic rationale. In urban areas space is a scarce and, therefore, an expensive resource. In order to use the current space for mobility more efficiently, the use of a longer tram or train is an effective way to increase capacities. Rather than to increase the frequency, which is no longer possible without safety risks, a longer vehicle allows to bring more, and more diverse, passengers on board (kinderwagen and wheelchairs included).
It is a long-term objective to make urban areas liveable for all ages. Tramways which allow a low or, better, no barrier to entry is a necessary condition in this respect. The new “Urbanliner” in Berlin (image below) offers such essentials of access and urban mobility. A single tram is 50m long with 88 seats and 215 standing persons in larger corridors. 300 tram passengers can be compared to about 12 average length cars with at best 15-20 passengers.
A consensus of “how best to move it” in cities pays off in the long-term. Planning has to start about a decade before delivery and needs to survive political cycles going back and forth.

Learning locations

We tend to associate schools as the primary learning locations. However, there is a multitude of additional locations that offer excellent learning locations like museums, libraries, churches, enterprises or various associations. Some of these learning locations have better equipped learning facilities and environments than many schools. It is about time to reckon with this and advocate stronger links between the often disconnected worlds of learning. Teacher training focuses on schools, curricula and teaching methods, but the systematic combination of all these „external“ learning locations with the full-time schooling world could stimulate so much more learning. Maybe, even the social selectivity of education could be reduced through the motivation and different entry points into learning by a diversity of learning locations. Lifewide and lifelong learning are likely to be motivated at an early age. (Image: Stabi West-Berlin 2026-7)

Water in Parks

In 2026-7 and a 3rd hear wave approaching, the real luxury consists in water in inner cities. As a source of refreshment and cooling when temperatures rise, water provides a natural source to cool down nearby people, buildings as well as any trees. The wisdom of a hundred years ago appears again as a major solution as global warming progresses. Evaporation of water is cooling. Some simple facts deserve to be repeated over and over again as urban planning seems to have forgotten such simple physics. We have think about a lot of green and blue spots again in our cities to achieve the much needed cooling effects. (Image: Viktoria-Luise Platz, Berlin 2026-7)

All the lonely people

This line of a song by “The Beatles” dates back to 1966. “Ah, look at all the lonely people” is a kind of puzzled outcry to reckon with the loneliness even in busy and charitable places. 60 years later in 2026 we have whole ministries in some countries to deal with loneliness. It is not a niche problem. Tackling the problem needs to go beyond raising awareness. Loneliness occurs at all stages of the life course: children, adolescents, young adult, migrants, employees, single parents, care giving people, even within couples, seniors and very old persons. It is not restricted to urban or rural areas, but changes from one to another phase in a person’s life course carry the risk to encounter loneliness. It may well be only a temporary phase before new relationships can be established or previous contacts revived. There is a role to reach out to people who might be lonely for all of us. Public policies should be scrutinised on all levels whether they manage to break barriers or raise new ones for persons to feel lonely. In Berlin, the local level in each district is taking measures to facilitate informal meeting points open to all ages and walks of life. The “Wüstenrot foundation” sponsors many initiatives where public policies are short of funds. Projects enhance networks of people and organisations eager to assist “all these lonely people”, wherever they all come from.  (Image: Conference on loneliness at Berlin city hall Schöneberg 2026)

The next big challenge in medicine and public health seems to be the multiple long-term conditions. Many people do not suffer from just one medical condition, but several ones at the same time. Diabetes is one such condition which frequently comes along in combination with other conditions. The definition of Multiple long-term conditions comprises 2 and more conditions like cardiovascular, metabolic, respiratory or cancer, to name just a few of the more common ones. Our health and care systems are little prepared for adequate treatments as this involves a coordinated intervention and poly-pharmaceutical therapy. Changes in a single condition have repercussions in the condition and treatment. This makes adequate treatment a resourceful process with limited knowledge about the multiple interactions and intervening parameters. Add, for example, depression to any of the above mentioned conditions and the behavioral assumptions of correctly taking prescribed medication becomes a major issue for patients. The challenge for aging societies and societies with more people suffering from early onset of obesity and diabetes increases in the coming decades. There are several teams that address these challenges in research which gives hope to all those suffering already from Multiple long-term conditions.

Climateflation

Central banks have started to deal with the impact of climate change or inflation, short “climateflation”. New and additional inflationary pressures originate in climate change and global warming and they necessitate a closer scrutiny. Heat waves, like 2026-6 in Europe, or earlier ones have created an upward pressure on prices. Loss of agricultural production can be severe due to weather extremes which occur more often and with greater intensity. Such extended hot and dry climates reduce the production of crops and spikes in prices that only reluctantly return to average levels shall cause price inflation (climateflation). These are the short term impacts.
The medium run impacts alter price relations and valuations of in sectors like housing and infrastructure. Badly isolated stocks of housing, schools or hospitals depreciate valuations and the heavy investments needed for isolation of roofs, walls and widows as well as heat pumps to produce cooling shall be in very high demand, which makes price increases more likely across the construction sector. As we expect new devices to be “AI-intelligent”, “mem-flation” will be pushed up as well. These factors can give a push to some economies which are producers of the products in high demand and able to expand production rapidly as well. Just importing higher numbers of air-conditioning systems from other countries shall worsen trade balances.
The major challenge, however, remains our inaction to stop global warming to avoid additional economic and human losses related to climateflation.

Gone Gliding

The seaside resorts offer additional experiences to people beyond swimming. Gliding on the water or in waves is an affordable exercise for everyone. It  just needs a small board and off you go. Falls are a usual part of the exercise. Beware of them if you have any prior conditions. For the 50+ generations some regular prior falling exercises are a must. Youth has the advantage of sufficient power per kg of body weight to afford repeated falls. Water and sand soften the falls. The gliding experience, however, is a great compensation for the risks taken. Not for everyone, but early experiences in or beyond schools give pupils a head start on how to balance out yourself in specific situations. Spectators and the experience to be under observation might influence your performance for the better or worse. Balance is a rather complex experience combining body and mind coordination for all ages. 

Gardening culture

There is a specific set of skills attached to gardening culture. You do not have to travel continents to experience the pleasure of gardening from more than just your own culture. Beyond the tradition of the French garden “à la Le Nôtre”, the English garden including the short precisely trimmed lawn and blooming arrangements, the Japanese gardens have a wholistic approach, which pay attention to broader human experiences of nature. A garden is a kind of sanctuary. It resembles more an internal journey rather than a showing off to others. Walls serve to enhance privacy to be able to open-up again later to others rather than a symbol of distinction and exclusion from the less privileged. Small places suffice to give room to a Bonsai experience. The very busy seaside resorts and port of Ostend on the Belgian coast has reserved a small spot for inner peace in its Japanese garden. (Image: Japanese garden “Shin Kai Tei” in Ostend created by Takahashi Sawano) 

Autonomy in swarm

Swarm behavior is a fascinating research area. Almost all scientific disciplines feature some interest and publication in this area. The biological origins have been associated a lot with the marvelous behavior and patterns formed by fish moving about in swarms. Some species of birds show similar patterns of collective and somehow coordinated swarm movement. It appears to be tricky to safeguard some form of autonomy in the overriding mass behavior and mass movement.
Recent advances in this field by Li, Li & Zhao (2023) model such behavior within a predator-prey framework to explain the evolution of overall swarm behavior. Whereas “prey” strategies consist in “flocking” and “swirling” to irritate predator(s), the predators make use of “dispersion”, “confusion” as well as “marginal predation tactics”. Additionally, several assumptions go into the modeling of swarm behavioral evolution: agent observation, agent dynamics, and the environment. The mixed cooperative-competitive multi-agent setting applies reinforcement learning, additionally. The framework of evolution has 5 driving forces: (1) homogeneity of a swarm (parameter sharing); (2) actor with decentralized critic network; (3) replay buffer to enhance learning; (4) rewards for predator and loss for prey; (5) learning algorithm.
The modeling approach reveals the impact of an agent-critic network (potential of autonomous behavior) for protection of a swarm in a predator-prey scenario. (Image: fish in fish bowl 2024)

Autonomy in literature

As we might imagine, autonomy has been and is a huge topic in literature. From the foundations of democracy to the autonomous state building, historical accounts are full of treaties on autonomy. Literature has taken similar steps by asking can we really be autonomous in our decision-making as we are social beings embedded into varieties of Throne, families and networks. There are ever larger parts that we are conscious about, but the realm of unconsciousness or sleep remains substantial. Maybe in literature, the author Samuel Beckett has gone furthest in dealing with human autonomy in his writings. The search for autonomous action might lead to far-reaching inactivity in “Waiting for Godot”.
However, Beckett’s view about autonomy can also be interpreted as a continuous battle of mankind as demonstrated in the often cited expression by Beckett (“Worstward Ho”, 1983, p.7) “All of old. Nothing else ever. Ever tried. Ever failed. No matter. Try again. Fail again. Fail better.” Our strive for autonomy remains a lifelong struggle. The path to more autonomy is not linear over the life course. In fact, much evidence from gerontologists suggests that it might follow an inverse U-shape, being low at birth and low before death. Literature has guided us in such questions just as much as religious, philosophical, legal and social concerns enter into the underlying concept of autonomy and autonomous decision-making across the life course.

China Job Quality

In a small study of 771 Chinese adults, Dong, Wu, Ni & Lu (2021) have reported on the impact of long working hours on job satisfaction. If you work few hours, job satisfaction increases as you work more hours. However, working many hours already, additional work, 40+ per week, does no longer increase work satisfaction in China. In order to preserve the recommended or communist work ethos of a “996 work schedule” (from 9 a.m to 9 p.m, 6 days a week) the authors recommend that managers support more autonomy for workers to fix their schedules as this could increase their job satisfaction. Autonomy to schedule your work and more autonomy in decision-making moderate the impact of long work hours on job satisfaction. Eventually the Chinese comrades might get satisfaction in other areas but work as well.
(Book Exhibits on Karl Marx, Museum Trier Germany Books 2023)

Job Quality Insights

In the U.S. the Upjohn Institute for Employment Research conducts a major empirical study on job quality (Houseman et al. 2025 1st wave 18.000 respondents). The documentation and the full set of questions (Link) cover 5 dimensions of job quality: compensation and job security; work structure and autonomy; work environment; worker agency and voice; growth and development. The special merit of the survey is that it makes great efforts to cover also new forms of (precarious) self-employment (Abraham et al. 2026). The degree to which can you make autonomous decisions is of relevance to the self-employed as well as it is a part of the job quality of dependent employees in small, large or big firms.
Related to the use of AI for work purposes question 31 asks for the influence on the decision to use new technologies in your job. This is the modern version of a question, whether you have influence on how you do your job. Bullying in a job may come from supervisors, colleagues or customers and respondents report on this. Beyond the answers given for “your main job”, it is noteworthy that the inclusion of questions on a secondary job allow to identify with more precision the precarious forms of how people try to manage to make a decent living in the U.S.A.
(Image: Exhibition Fashion Council Berlin at New National Gallery 2026)

Waterfront Paris

Most people enjoy the banks of the river “La Seine” in Paris. Ever since the Olympics in Paris 2024, the temptation to go swimming there or to do some other kind of water related activities, is high. Fewer people are aware of an other splendid location near the Gare de l’Est. The canal Saint Martin and the nearby end of the Canal de l’Ourcq ( image below) have much to offer for stressed people to take some time off and relax. From cinemas, cafés and bars you can choose your favorite to pass time with friends or family, alternatively just keep walking for miles to get your exercise as needed to sustain your body in good health and shape. The health impact of such cool and more humid areas has a high value to the benefit of all without forcing people to travel long distances for recreational activities or normalizing weight or heart rates. 

 

Dry January

There is a health trend to pass a sober, “dry January” after the X-mas and New Year festivities. It seems to be rather popular, so that the French wineries have started a marketing campaign of a “French January“. We shall see what the battle of marketing campaigns means in the end for the health of our liver (Study Link). It might lead to changes in consumer behavior of the following kind. Take advantage of good price offers for French wine and champagne in January and drink it as of February.
For addicts of the “carneval season” this should not be too difficult, jointly with a couple of friends. Alternatively, you might not be bothered and continue a moderate consumption across seasons. Moderate consumption, however, is the tricky part of alcohol consumption. Medical guidelines (health of liver) have evolved recently to count each drop of alcohol into your total consumption in either fluid litres of pure alcohol or the equivalent measured in grams. 

Latent social structure

In empirical approaches to sociology we occasionally apply “latent variables analyses”. The aim is to uncover links between data that are not obvious in standard analyses of data. We are pretty convinced by evidence that age correlates with the probability of death. However, most tragedies are created around exceptional counter examples to this “rational expectation”. We also somehow have an intuition about the positive effect of social networks or the social fabric in a more general sense on living and survival. In some of those latent variable models we find evidence for an underlying factor without being able to properly name or frame it. Hence, as social scientists we continue to be interested in ways to make latent social structures more visible. With such an approach in mind I visited the exhibition by author and photographer “John Kolya Reichart” in the “Schöneberg Museum” entitled “Die Kette” (The Chain, 2026-5). The start of the chain is a familiar person in your neighborhood who leads you to the next person and so on. It is explicitly a non-random procedure, which complements proceedings of strictly random sample selection of survey methodologies. The sources for bias outcomes are multiple, however, an underlying or latent social fabric of a friendship and support mechanisms can be shown. Besides the b/w portraits and audios, giving a justification for the choice, the documentation of the process of production gives more insights into the risks and potentials of this form of insights into latent social structures.
(Image: Schoeneberg Museum, “Die Kette” by John Kolya Reichart)

Mem-flation

A recent addition to the repertoire of inflationary pressures is inflation due to real or supposed shortages of computer memory and microchips. Contrary to other forms of inflation which are induced by supply shortages (like fossil fuels) mem-flation is due to heavy actual and even more proposed investments in data centers, server farms, cloud storage and AI-driven computing capacities. Quantities and quality of microprocessors, which are essential parts in all these devices, might not be able to follow this demand-driven inflationary tendency. The hype around AI, therefore, is a major element in this likely overshooting market reaction. The current market trend is likely to last for another year as the already announced investments of the big data companies have been announced including 2027. The producers of NVIDIA, Samsung, TSMC, SK Hynix, Micron, ST Microelectronics, Infineon, Intel and AMD have realized huge profits from this demand-driven mem-flation.

Psych-inflation

The economic narrative and measurement of inflation is incomplete without the proper account of the psychology of the price building process and mechanisms. After the 2 previous oil-crises of 1973 and 1979, the panic about not having enough oil and derivatives within the coming months, has lead to prices increases almost instantly. Despite the fact that there is enough oil floating on ships and in pipelines for 3-6 months, depending on estimates, the psychological effect of being eventually short of oil creates “Psych-inflation”. Oil markets use the “Angst of disruption” to make additional profits on people and enterprises’ hoarding behavior. There are powerful interests to exploit such potential shortages as it is a suitable time to reap some extra profits, particularly for those who knew early about a likely military conflict.

Random randomness

In textbooks or courses of statistics, just as ordinary experiences with throwing a dice, we assume the perfect dice. This means the dice is assumed to have equal probabilities to roll on each side. Further, each throw of the dice of a sequence has an independent equal chance for each number to come up. To determine a “fair” dice we would throw the dice a thousand times to check, whether the probability of each side is about equal. However, the world of dices is not perfect and temporary or persistent margins of deviation are part of the real world. The weekly lotteries demonstrate this over and over again. Playing around with different shapes of dices makes the issue of probability tangible. Well worth to explore further empirically as well as a topic for inspiration of new approaches to learning about statistics. (Image: Dices produced by “devinsdice” Berlin 2026-5-5)

Given then Chosen

Family is first given and only later in life family becomes a matter of choice. This is a rather sequential perspective on family matters. A lot of ethnological as well as sociological research shows that the shadow of the given family can reach long into an individual’s later life. It is essential to be or become aware of the mutability of what constitutes a family. The ethnological variability across the globe of the norms and legislation that govern families is amazingly broad. The interference of religious beliefs and practices have always attempted to gain access to the nucleus of family life as an attempt to influence the “given part” of family.
It is a much more complex issue to understand and research the “chosen part” of partnership trajectories in a broader sense and from a life course perspective (Fasang et al. 2024). The social background and upbringing in a broad sense have a lasting impact on most people. However, there are enormous degrees of freedom to later on choose your friends, family or families. Societies across continents have chosen and invented particular rites of transitions between families and how to bridge networks. It is amazing that we tend to devote so little thought to this nucleus of our societies.