With around 7 billion people currently living on our planet, it’s quite safe to say that we all have a double (or doppelgänger) out there somewhere. We've seen this happen many times before, but having a double doesn't just apply to us mere mortals.

Sure, time travels do not exist, and there's no proof about it, and it's all from bad Sci-Fi novels, right? No one ever could be able to travel time or have immortal life, right? If all of this is so impossible, then what about these dead-on celebrity look-alikes, that live not today, but did so a hundred years ago? How could one explain that if they are not time travelers! To be honest, we really don't have any other explanation with these doppelgangers, so let it be a great time travel proof.