Contemporary theory is that time may not exist and is simply a contingent effect of quantum entanglement 'locally'. With relativity as a continuing operating premise, it is just physical change that occurs without time being an item apart in-itself. If time is an emergent phenomenon of quantum entanglement it may be possible to learn and duplicate various relevant quantum structures to relocate or reconstruct 'time'.
Current theories of time as an emergent characteristic created by quantum entanglement interacting for a temporal order with a human mind suggest that the Universe may already be fully, temporally existent such that it has not time. Neither is there causality. Further; nothing is an accident. A recent N.A.S.A. video explains what is in effect the Everett many worlds criteria developed to Tegmark's level four Multiverse. The point is made at the end of the video. https://youtu.be/tc7LpJswIZU
