Cama Zots said:
Is time travel possible? I mean what about alternate time lines and going back in time and killing your grandfather and stuff like that? It's so confusing I don't think it's even possible... I don't think it would be worth the risks involved. The world we live in could very well be influenced by visitors from the future.
Anyway you spin it I think it would take more than a sonic screw driver, chameleon circuits, and a flux capacitor.
So you're saying you went back in time and killed your grandfather, so you were never born, so you never went back in time to kill your grandfather, so he never actually died because you weren't born and couldn't kill him?
My theory, if you attempted to kill your grandfather, some event would interfere so that the time line couldn't be interupted. Technically, whatever happens to you in the past wouldn't effect the future, since you didn't exist then.