Gone sailing

There are numerous ways to spend a nice vacation and take off your mind from daily routines. Sailing is certainly one of those leisure activities which ask for full concentration. Steady winds are more the exception than the rule and the skipper is asked to adapt rapidly to changing wind directions and other conditions. Waves and other sailing boats may of course ask you additionally to adapt your course to unforeseen circumstances. All this is a great training to keep on track even in stormy weather conditions around you. Team work helps to set sails as well as in manoeuvers to enter into ports. The Paris Jardin de Luxembourg (image below) allows training of parts of these competencies from an early age on and into old age as well. The physics of power and capsizing are part and parcel of sailing as well just as much as rules for crossing course, of course. 

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. 

Gone paddling

Similar to windsurfing, paddling has not only a physiological, but also an ecological impact. Rather than using external power the equipment requires a good sense of balance on the board and propulsion originates in your own muscles. The benefits are great for mind and body and sharing a board is the standard way of getting your regular exercise.
There are more and more stations near the sea or on lakes available in 2026-5, so that it has become a much more accessible form of exercise. Paddling is also an age-inclusive practice, since the “probability to fail“, with the pleasure of spontaneous diving, is spread relatively equal across ages. Learning curves, however, may differ substantially across generations depending on prior balancing experiences. The ecological bottleneck consists in the access to sufficiently clean water resources so that the healthy and fun exercise shall have positive long-term health effects. 

Dynamic Equilibrium

The notion of a dynamic equilibrium is applied in several scientific disciplines. The search of the world wide web takes us first to the application in chemistry. The dynamic equilibrium denotes the state when reactants and products are continuously converted. Fascinating as a process, there are videos where you can watch the process evolve. Applications in economic or social theory are also common even if the time scales to observe such processes of dynamic equilibrium usually take longer to evolve than in chemistry of bubbles. In physics we ponder about dynamic equilibria in Newton’s view of gravitational forces between planets and the celestial system. With a more down to earth approach we might just admire the dynamic equilibrium of an artist on a rope, before we dive into the complex challenges of the new balance of power in international politics of the multipolar world. 

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).

 

Korea relieved

On Saturday 14th of December 2024 the Parliament of Korea voted with 204 out of 300 votes, the required 2/3 majority of the parliament to dismiss the president. The declaration of martial law has been the most serious attack on democracy in Korea since its founding in 1987. It is the 3rd impeachment of a Korean president in this short time of democratic life cycle. After impeachment the constitutional court has to confirm the impeachment also with 6 out of 9 judges in favor of impeachment. In 2017 the judges confirmed the impeachment of a president due to corruption charges, but in 2004 another president was reinstated after illegal campaigning charges were retracted. Democratic procedures hinge on checks and balances in the constitutional set up of a state. Nominations, votes of confirmation of judges are important safeguards against illegal martial laws to restrict or even abandon democracy. Pressure from the street, the people at large, is another safety net of democracy. It should not be the last resort for democracy’s survival as it is likely to come at high costs of human lives.

Sleeping

Sleep is a process. That is why it is best to talk of sleeping rather than sleep. There exists abundant research on sleep and more and more acknowledge the process-like characteristics of sleep. The medical literature deals a lot with sleep apnoea, which constitutes a serious health condition. Time use surveys establish links between daily activities and sleeping for example. The social context is another influence on sleeping. Friends and family co-determine sleeping patterns as well. The latest better understood impact on sleeping depends on the use of technological devices before and during sleeping. Smart phones reveal themselves as not so smart if it comes to the quality of your sleep. At least this the result of the study on „bedtime technology use on sleep quality and excessive daytime sleepiness“. It yet another field in which technology is slowly creeping under our skin and we have to learn how to handle negative side effects before they endanger our physical as well as mental health. Bedtime routines or reading without a screen before falling asleep appears to be a worthwhile way to improve sleeping. Worth trying out again and again.

Instability

In political science the stability- instability paradox is much discussed (paper with game-theoretic analyses). The reliance on nuclear weapons, supposed to enhance stability in the world order, is rather driving the instability making conventional wars even more likely. Michael Beckley argues that containment of China’s expansionary policies is needed to avoid even more disastrous confrontations (Foreign Affairs, 2023 Nr.5).
Different from the German cold war doctrine “Wandel durch Annäherung” Beckley argues that commerce has not brought US and China closer together, but it is actually driving them further apart. After decades of trade imbalances with China the economic power of China can be felt as overwhelming. But there are multiple risks to its economic model and strategic interests to secure raw materials from across the world. Aging of China is another economic and social fallacy difficult to overcome with short-term measures.
We are about to witness another couple, triangular or more relationship to establish as “enduring rivals”. This may last for centuries rather than decades, although the French- German couple has managed quite successfully to turn such rivalry into an “entente” relationship of importance to the whole European continent. The shift in emphasis of US foreign policy is going to be significant. Containment with Russia has worked, so why should it not work with China as well. The likely answer is demographics again. The size of the internal market of China is sufficiently large to continue a splendid isolation after heavy one-sides trading is over. State control of the internet and social scoring of the population is also a powerful tool to suppress the formation of free will and independent opinions. After all, instability in external relations might even be used to ensure internal stability. Such strategies are common to all political systems. The stability- instability paradox is staying with us and this is rather stable even if the discussion changes continents. (Image: Comical battlefield Map 1854, by Berendsohn shown at Waterloo, Museum 2018)

Auenlandschaft

Die Auen und die Wälder in der unmittelbaren Nachbarschaft hatten eine hohe Bedeutung für die Biodiversität. Mit ihren fruchtbaren Böden waren sie leider sehr begehrt für die Landwirtschaft und wegen Wassernähe auch für Wohnungsbau. Die Auen haben eine wichtige Funktion als Aufnahmefläche für Hochwasserschübe an allen Binnengewässern. Das haben wir in Deutschland an der Ahr schmerzlich wieder erleben müssen. Nachhaltiges Wirtschaften mit den Auen statt gegen die Auen ist möglich. Selbst der langsame Rückbau von befestigten Flussufern ist möglich, wenn Ausgleichsflächen für Überflutungen erschließbar sind. Das braucht eine langfristige Planung. Diese fängt meistens auf den umliegenden Bergen und Hügeln an, die nicht mehr nahezu ungebremst große Wassermengen rasch in die Flüsse ableiten. Auffangbecken, die höher gelegen sind, Versickerung, die nachhaltig bewässert, sind verbundene Planungsvorhaben, die zusammengenommen eine wirksame Antwort auf den Klimawandel bilden.
Auen haben feuchte- und wärmeregulierende Funktionen, die den umliegenden Dörfern und Städten zu Gute kommen. Elektrisch betriebene Schiffsmotoren drehen leicht mit höheren Drehzahlen und Vermeiden dadurch zusätzlich die hohen Heckwellen, die sonst oft bei langsam drehenden großen Schiffsschrauben zu beobachten sind. Als Naherholungsgebiete sind die Auenlandschaften sehr beliebt und nicht erst seit den Malenden der Romantik. Die größere Biodiversität sollte eine Antriebsfeder sein, diese Naturschönheiten zu bewahren und, wo möglich, wieder herzustellen. Leipzig hat das erfolgreich durchgeführt (Link PDF). In Frankreich tragen die Rückhaltebecken der Marne wesentlich zur Verbesserung der Wasserqualität der Seine bei damit mittelfristig darin sogar wieder gebadet werden könnte.

Calendar Time

We all use calendars to organize our time almost unconsciously. This is helpful to organize and synchronize our time together. Working time, family and individual time tend to use the same time structure to facilitate community. Work arrangements depend a lot on a common method to structure time. The work-life balance hinges a lot on synchronization of calendars and joint time slots. Towards the end of the annual vacation period in Europe the annualized change of calendars is still common practice despite most people going digital. Annual overviews allow to allocate and potentially synchronize calendars for major events or periods (next break, period devoted to learning, family planning etc.). A cleavage that differentiated Europe in the analogous times was that some countries like Germany use(d) chronological calendars running from 1st of January until 31st of December and counting calendar weeks (1-52). Many other countries have long ago moved on to “functionalist” calendars running based on the school year from 1st of September to 31st of August each year. Different planning horizons appear to be the obvious outcome. Whereas the former might focus on the planning of the end of the calendar year 2023, the latter functionalist calendars begin to structure the new year-long period 2023-24 including the next summer break towards the end of the next schooling year.
In France you start end of August 2023 to plan ahead until end of August 2024. This comprises the Olympic games in Paris 2024. Don’t worry, most tickets are sold out already and attributed through lotteries. When people in Germany start to buy calendars for 2024 and organize a printed calendar, this occurs traditionally around Christmas time and New Year’s celebrations.
Specific professions follow their own calendar time. Academic years or accounting years may well differ from the other annualised organisation of time through calendars. Of course, religions have established their own calendars just as migrating birds or French revolutionaries in the 18th century. Meteorological calendars or sensor-based structuring of annual sequences of seasons like in trees, plants or insects add to the impression of the existence of multiple clocks.
A de-synchronisation of these multiple calendars increases the need to coordinate societies within or society and the economy, religion or ecology. I liked my printed calendars over the years. Now I shall print different versions for different countries and functions. I still wonder, if my life got easier or more complex. Probably, it has only become easier to organise complexity and diversity. Clock 6 video