“If determinism, the predictability of the universe, breaks down with black holes, it could break down in other situations. Even worse, if determinism breaks down, we can’t be sure of our past history either. The history books and our memories could just be illusions. It is the past that tells us who we are; without it, we lose our identity.” ScienceTimePhysicsBlack HolesStephan Hawking Author:Stephan Hawking