Quote:Unless I missed it there's nothing about the Flash TV shows mythology that prevents one from revisiting a moment you've already experienced. Other tv shows may have that rule...but again different shows different rules.
No rules at all with this show.
Here's the way it would work.
Q: Was I in your living room this afternoon talking to you?
A: No. You have no memory of it. I was never there.
Now there's nothing to stop me building a time machine at some point in the future and travelling back to your living room this afternoon. Except that you have no memory of it happening. I was never there. If I had been, you would have a memory of it NOW. But you don't.
So either one of two things is happening. Either a) I never travel back to this afternoon, or b) I travel back, but in doing so create a divergent reality. Those are the only two options.
Quote:While I agree this show sucks at sticking to their own rules...I don't think it's fair to assume the time travel rules for another show apply to this show. Like I kind of take issue with your comment "You can't change your own timeline, and can't stay in a divergent reality, unless it's one where no version of you exists." I agree with the first part but there is to my knowledge nothing that says you can't be in the same reality as your counterpart. Barry met Barry 2. Barry's been in the same room as his past selves.
It couldn't be done on ANY show about time travel.
You could be in the same reality as your counterpart easily, but you couldn't have the kind of life Barry wants: IE to be part of the Allen family without anyone suspecting anything was out of the ordinary. For a start, there'd be two of you. Your parents might find that a little strange, to say the least. That's why I said 'on that level'. You couldn't create a reality you'd fit into unnoticed unless you were prepared to get rid of your doppleganger.