Every year there is only one special big event (Lange Nacht der Wissenschaften) to make science more transparent to the population at large. Mostly hidden behind impressive walls and buildings guarded by porters,
science is not as transparent for the large public as it would like to be. In general people are rather intimidated or feel quickly out of place if scientist start to “explain” in lengthy formats their topics, ideas, questions and intermediate solutions. Even if the distributed open science fair is running only from 5 p.m to midnight, there are lots of things to learn and look into.
The website lists 1500+ sessions, 230 are in English language. You have to be selective or spread your interest over several years. I chose to start with, maybe, the toughest choice the Weierstrass-Institute near the Naturkundemuseum. Several projects of applied mathematics and stochastic processes were exposed and explained in more or less transparent and/or understandable form to the audiences. The talk by Julian Kern “Why chance doesn’t happen by chance” had a nice interactive format with “Kahoot-quizzes” and gave a good introduction, why it is useful to understand, statistics and stochastic processes in fields from biology, physics to social phenomena. The White board replaced already the black board and chalk.
The open doors policy, at least one day per year, raises interests and awareness for topics few people would only think that they existed already. The volume “Mathematics and Society” (Wolfgang König ed. 2016) is something I shall follow up on eventually. There are lots of applications of mathematics to social phenomena (time seen from the perspective of generations for example, image below from talk), which we have a hard time to come to grips with without the aid of mathematicians. 
Violence Potential
The book (editor Sabrow 2023) and the exhibition “Gewalt gegen Weimar. Zerreißproben der frühen Republik 1918-1923” need a broad European audience. The violence, which in the medium term destroyed the newly founded democracy of the Weimar Republic in Germany, is linked to the immediate aftermath of the 1st world war. The relatively calm abolition of monarchy in Germany did in no way prevent the eruption of violence within the new democracy. Extreme forces prepared in organized ways (Organisation Consul) and some in open public discourses the potential for the use of violence. Armaments left over from war equipped the Freikorps Movements and the potential to use the weapons was present at all times in the aftermath of WW1 in Germany. The contributions to the volume provide a detailed account of these 5 crucial years when democracy was able to defend itself against all odds. The strategies to take control of the country were built on a violent rhetoric which prepared the ground to put violent talk into action later on. This spiral of violence is hard to de-escalate once started. However, democracies have to foster ways to calm the spirits in periods of high potential violence. Elections as well as the campaigns before are the arms of democratic change. They should be used as such to pave the way to compromise.
Composing Assisted
Before the existence of digital composition tools composers were assisted by “Kopisten”. These persons rewrote the original draft of a composition into a “proper” version of the original document. Musicology has a tough time to deal with deviations from the original. It needs to be clarified which is the final and authorized version. In some instances this is far from evident. Just as an example Robert Schumann made ample use of the assistance of Kopist Otto Hermann Klausnitz (cf Nr 6), sometimes for the preparation of the composition, the finalized versions or the explicit drafting of different voices. Klausnitz himself was a flautist in Leipzig (Gewandhausorchester) and a conductor in Duesseldorf. Overall the debate is still going on, whether the composer’s draft or in many instances the Kopist’s version of the composition (authorized or not) prevails. In the age of AI, which is highly influential in modern music, such questions will most likely be intrinsic to the process of composition as well. AI is influential in evening out rough edges. Anette Mueller (2010) has done a great job to make this work of “Kopisten” much more transparent and her concluding chapter is programmatically entitled “Komponist und Kopist- Aspekte einer produktiven Kooperation”. (Image Mueller, A 2010 p. 340).
Betting vice
Betting is considered a vice. The industry has moved from the local bookmakers to the internet and is spread across countries and continents. Some legal advisers have classified betting as the fastest growing vice industry and it is about time to launch a wake up call for more oversight of what is going on in the sector. As betting like gambling seems to be working in conjunction with other addictions the potential of cumulative risks is quite high. Our brains tend to wire things together which frequently occur jointly. It is difficult to disentangle these co-occurrences later again. The major angle of attack is prevention.
Health journals start warnings of the detrimental effects persons and observe that the industry follows similar strategies as the tobacco industry to address as many people as possible. And this is very successful and profitable for them. Hence, prevention strategies should also follow what has been applied to smoking like the ban from restaurants and bars as well as the restrictions on advertising. We will have to accept that betting and gambling should not be as easily accessible as it is currently. Age restrictions have to be applied stringently. I bet this will take quite a long time until Europe and elsewhere the regulations will change. Some of the young get interested in even more stimulating activities like exploring arts (image below class at Neue Nationalgalerie Berlin 2024-6) rather than betting on who is going to win the Euro 2024 football matches.
Smoke Gamble
Smoking is like a gamble. Your input is your health and money. This is not including those who might rely on you or family relationships that might suffer one way or another. The other link has gambling at its source and smoking goes along with the continuous risk taking or the belief to be able to master the risks involved with both forms of potential addictions. Research has accumulated evidence that in fact both smoking and gambling occur frequently in combination with each other. Taking risks against the odds of suffering losses, maybe only in the medium or longer run perspectives like for health seems acceptable for those people. Society has put rather high taxes on both activities to discourage people and invests in prevention of addictions. However, it does not have substantial effects on people as smoking remains around the same level and gambling (poker online) or betting on sports (Euro 2024) are rising rapidly. Vaping and internet gaming have broadened the spectrum of addictive behaviors mostly for younger persons and young adults. The risks are manifold and increasing in their addictive potential since the smartphone is always in some pocket just like the smoking device. The behavioral turn in the social sciences has been well understood by the industries as well. The stakes for human development are high in this endeavor to offer young people equal opportunities at entry into adulthood.
Cannabis Alcohol
The use of cannabis and/or alcohol is yet another question where we are used to ask questions in the form of: either the or the other? Over generations we have gotten used to no longer ask for each do you or don’t you. With the controlled liberalization or legalization of cannabis in some Western European states the framing of the question is more like you do the one or the other, particularly for many younger persons.
Decriminalization of both drugs in small quantities is apparently reducing crimes link to drug use and drug dealing. On the other hand, the thresholds for doing drugs are lower than they used to be. In inner cities it is therefore no longer a surprise to find both kinds of drugs with addictive potential next to each other (see image below). We know that it is a slippery road from regular drug use to uncontrolled dependency and personal disaster. For cannabis a study published in the Lancet (Petrilli et al. 2022) added the importance of the potency of tetrahydrocannabinol to the estimate of risks. This is similar to the studies that differentiate the level of alcohol in drinks consumed. The higher the concentration, the higher the risks. A simple proportional relationship prevails in both drugs. The cumulative effects of consuming both together might have quite surprising non-linear effects.
The big issue is the risks of mental health related to these drugs. However, the causal direction is not easy to detect. Drugs induce mental health problems, but also mental health issues lead to drug abuse. This remains quite a puzzle for scientists to disentangle.
Additionally, the link to smoking and addiction to nicotine is a frequently observed corollary. Studying just one single source of health problems and addiction might be too restrictive to learn about the whole set of causal effects and casualties. For the time being we seem to jump from one field of attention to the next one ignoring the multiple interrelated factors at hand. 
Smoking Vaping
Both smoking and vaping are big business. Nicotine is well known for its addictive capacity. Once started, it is very hard to give it up again. For many decades we devote considerable efforts and costs to encourage people to give up on smoking or, better, not to start smoking in the first place. The young are particularly vulnerable as damages persist for a longer time. Progress has been made to reduce passive smoking of children and people in restaurants, at work and public spaces. The relatively recent trend of vaping instead of smoking is considered less harmful, but scientific long-term evaluations, whether these effects are lasting for several years, are still missing.
A repeated cross-section study in England (Tattan-Birch et al. 2024) has revealed that the declining trend of nicotine use has already been reversed among youth due to the rise in vaping. Vaping seems to move from the fashionable niche product to the popular mainstream among youth. The addicts are only cost-sensitive on the margin. The relative prices of smoking and vaping might play a role to put people on different health trajectories. The question is not between either smoking or vaping, but for some it is both, although it should be none of both. The question of smoking yes/no is likely to be framed as either vaping/or smoking. The re-framing of the question shows the harmful potential in the longer run. We shall have a hard time to convince people and particularly youth not to be tempted by either/or but to focus on their long-term health trajectory and potential. (Image: Extrait from Arnold Böcklin, Self-portrait with death playing the violine 1872, Alte Nationalgalerie Berlin) 
LED light
For decades now, we have the LED light technology around us. In many instances we do no longer realize the presence of light emission devices (LEDs) for example in our television screens or in road lighting. However, this still is an exciting field of electrical engineering and the replacement of gas lighting as well as other electrical devices with higher energy consumption are high on the agenda for sustainable lighting. There are important health and security aspects related to lighting (sleep and road traffic).
In Berlin the demonstration and test area for innovative LED lighting is also an open-air museum which can be experienced throughout the year. The party-goers and club visitors might best know the demonstration street as part of the “Deutsches Technik Museum” The energy saving potential of LEDs use in street lighting is substantial and should interest most rural and city councils. The demonstration of the differential effects of targeted lighting and broad illumination based on the same technology is impressive. Of course, the design aspect of LED-technology with the colourful potentials are of interest beyond the technical aspects to replace for example gas lighting. There is much more to lighting than just opening your eyes in the morning. (Image FG Lichttechnik TU Berlin) 
Gas light
Even if it sounds crazy from today‘s perspective gas lights once were the symbol of progress. In the middle of the 19th century gas lights started to lighten and brighten the boulevards of major cities in Europe. The historic evolution of the various designs can still be followed in Berlin in the open space museum of gas light in the Tiergarten area near Zoologischer Garten. These gas lights were brighter than candles or petroleum lights and needed less maintenance. The CO2 footprint was no concern at that time and also safety concerns have been tolerated. Mechanical maintenance was relatively easy and sufficiently qualified personnel still abundant. All this has changed and the lamp posts powered by gas are mostly a part of industrial history now. The image below shows a fine example from Amsterdam. The solid construction shows nice ornaments on steel. The rounded shape remained quite unique.
Unfortunately, the accessibility of the museum has contributed to the loss of many nice examples of gas light designs. Many were destroyed during the football world cup in Berlin in 2006. Let’s hope the Tiergarten survives the Euro2024 better than the previous huge football events and Love parades. Serious precautions have been taken with quite solid fences to protect the inner city wild life.
Aussensicht Innensicht
Die Sicht vom Skulpturengarten der Neuen Nationalgalerie auf die laufende Ausstellung „Zerreissprobe…“ erlaubt einen tiefen historischen Einblick in die 1980er Jahre. Die Sammlung von Postern des Künstlers Klaus Staeck zeigen die bewegenden Themen der achtziger Jahre. Frauenrechte, Umweltschutz, Sicherheit sowie Medienwirtschaft. 40 Jahre später beschäftigen uns weiterhin, Lösungen für die plakatierten Themen zu finden. Images können Themen so zuspitzen, dass Anklagen daraus werden. Texte sind im Vergleich zu der Eindrücklichkeit der Bilder ein vergleichsweise stumpfes Schwert. Es ist aber gerade die Verbindung von Bild und Text, die Eindrücke verstärkt. „Meme“ Creators sind ein standard tool das die Kommerzialisierung und die Promotion weiter befördert haben. Kunstformen hatten diesen Trend bereits vorweggenommen.
