Time Travel and Parallel Universes.
A look at the "Grandfather Paradox" and how Parallel Universes could be the solution to this problem.
Let’s first take a look at the Grandfather Paradox.
If you went back in time and killed your Grandfather before your mother was conceived. Then your mother would net exist and so would not have been able to give birth to you meaning you would not exist. If you did not exist you could not go back in time and do the deed. If you did not kill your Grandfather your mother could be born and give birth to you… See where I’m are going with this?
This Paradox leads some scientists to believe Time Travel is impossible. Others say that the theory of parallel universes would make Time Travel possible even with this Paradox.
Now lets take a look at Parallel Universe Theory.
This theory states that there are other realities that are different to ours in small ways. These could be things like.
Germany Winning WW2
It says that each event plays out in a different way in each Parallel Universe.
Using this theory we can say that if you went back in time and killed your Grandfather then you would create an alternate reality where you don’t exist but your reality would still be there.