Time travel would create many paradoxes, particuarly the "man with no past" paradox. However, I don't think you would time travel and find a comepletely different future when you came back. History could be the way it is beacause of time travel (that's another paradox right there), so you can't screw up history.
PS: Don't try to find reason behind paradoxes, it will give you a headache!
You have found my stamp a perfect home! Thank you for adding it! The best part is now I know of this group, and I've got my eye on joining it, so...thanks again~
Np, as you can see this group is trying to promote all kinds of Time Travel and hopefully become a hub for all Time Travel related deviations on DeviantArt.
----------- "Time is a brisk wind, for each hour it brings something new... but who can understand and measure its sharp breath, its mystery and its design?" -(Paracelsus)
i run a doctor who fan site where people can chat on the forum or upload there pictures to show all the other fans. you can join for free [link] take alook and join if your interested we are a newish site thanks