Grandfather Paradox

Steven Gibbs talks about the Grandfather Paradox and his HDR some more. Basically, skeptics say that time travel is impossible because you could go back and erase your grandfather, so you never were. OK, so Steven Gibbs says that when you go back the original timeline splits into two versions. In the first (Original version) you were born, and in the second (Changed version) you were never born and your grandfather is gone. It is an interesting theory to ponder on.