I once saw a show that spoke about time travel. Within it there was a man with Hawkens debating the theroy. Anyways, the show but was called "through the worm hole" with Morgan Freidman as the speaker. They had a physicist calculating an very long equation in which they graphically prepresented showing how this calculation worked. Thus, theoritically speaking there is a possibility that in the furtur when technology may replicate this equation. As of right now, well thats obvious.