I have some questions about von Weizsäcker's views in physics, which I find them generally interesting. One of them is that he thought that time was fundamental (he even thought that logic, which is atemporal, was derived from a more fundamental temporal logic). He thought that time was a fundamental characteristic of physics and quantum mechanics in particular.

My question is: Do you know if von Weizsäcker changed his mind towards time being fundamental or if he eventually considered quantum models in which time was not fundamental?