Am I right in thinking most people have time travel wrong? That you can simply go back in time to change the future?
I handa thought that if parallel universes exists and we made a time machine, as soon as you hit the button to go back in time you would in fact go back in time in another dimension. Thus you're not going to change anything for the universe you were just in. If that is the case it is a sad fact that we cannot go back in time and fix any wrongs which has or will happen.