The Physics Of ‘Avengers: Endgame’
Also if time travel were possible, computers (both classical and quantum computers) would be absurdly powerful, unreasonably so that it is evidence against time travel. There is no evidence that time travel exists in quantum mechanics, but if it did, it would also need to be self-consistent. Although there is no experimental evidence for the many-worlds interpretation, the writers of Endgame should receive credit for taking their inspiration from a scientific idea, even though science does not support time travel as depicted in the movie.
Source: medium.com