Just give it to me in popular movies: Back to the future style time travel can’t happen but Terminator style time travel can.
It doesn’t say what constitutes a “major” change and what is a minor one though. The only guidance we are given is that the original motivation for going back must be preserved but otherwise very large changes can happen (planet of the apes marky wahlberg version)
It doesn’t say what constitutes a “major” change and what is a minor one though. The only guidance we are given is that the original motivation for going back must be preserved but otherwise very large changes can happen (planet of the apes marky wahlberg version)