Either time travel is possible or....OR people look like other people. I am not convinced that time travel is possible. I am certain that everyone has a doppelganger right now on earth that looks a lot like them.

If everyone on earth has a doppelganger then what's to say that in the past there aren't tons of people over the years that looked just like them. But you never know, it's easy to think that people that have more money than you have some kind of knowledge that we don't. Some kind of magic science that is only offered to the super rich. Guess as long as I don't win the lottery I will never know.