I am a physicist. My main fields were quantum mechanics and astrophysics, later media technology and media didactics. For many years I worked as a consultant in industry and in a leading role in vocational education. When I was young, I explained the cosmos to my fellow human beings at the Freiburg planetarium.

After leaving school, I underwent military training, because in the world situation of the time I considered it necessary to be prepared for war. Whether one then fights it or not. When the Warsaw Pact ended the Prague Spring in August 1968, I sat with my comrades in the barracks, fully armed, ready to move out to the assembly areas. The Americans stood at our side as brothers in arms. That is history. But anyone who has experienced what an alliance means when it counts looks more closely when it begins to crack.

In the winter semester 2023/24 I once again attended lectures in astrophysics in Strasbourg. Much of what was once considered established knowledge is being put to the test today, and not only in physics.

That is why I write about geopolitics, energy and artificial intelligence, independently and without institutional ties, in German, English and French.