Jungspund

Hello, the question is very difficult and in fact we don't know the answer. On the one hand, the Einstein equations are deterministic from a mathematical point of view. On the other hand the theory of general relativity do not forbid time travel. This is a problem for example if you want to play a Novikov Billiard. Gödel found interesting solutions which would deduce that the theory of general relativity is not deterministic but we don't know if this Gödel universes exist. greetings