Many people often ask 'well, if we came from the Chimpanzee, why is it still here? Why didn't it evolve?'
and those people are confused. We didn't come from the Chimpanzee, we shared a common ancestor with it. The chimpanzee has evolved right along side us on it's own branch of the evolutionary tree. The common ancestor is what died out and as of yet remains undiscovered.
People, wrongly, assume that the end goal of evolution is a human being, it is for us, not all creatures on earth. The chimpanzee you see today is an evolved version of that creature.
Anyways, time travel, once invented, will exist forever and will have existed forever, so yes it is possible that we could have altered our evolution via time travel.
Take that" Terra Nova" show for example, but ignore the multiple time stream angle, and assume at some later date we could travel back to "prehistory" and start over, giving us a head start.
but then the idea of paradoxes come into play, if we went back and altered our history, and time is a loop, then we've changed the past and as such probably created a paradox.
fun fun
edit on 15-11-2011 by phishyblankwaters because: (no reason given)

