My guess is that this topic has been covered somewhere at some point. However, I have not recently seen a general, more non-technical treatment of the subject, so I thought this may be the thread for it. In any case, for discussion purposes, I'm going to make the bold statement that time travel is impossible and that the "proof" for this statement is nothing so much technical as it is experiential. Experiential in the sense that if time travel were possible, we would at this moment see time travelers all around us, not only those traveling from the future, but those traveling from the past. In addition, not only would we at our time see time travelers, every culture from early humans to the dinosaurs would have experienced time travelers and all history and science books would have at least an obligatory chapter on the technology. The fact that none of this is the case is proof that it is impossible and we should stop fantasizing about it and wasting good popular science programming time. Now, I'm not talking about the deal that when we find out how to time travel then we can go back in time or forward in time, etc. from THAT point. You know, where the guy demo's the six flags rollercoaster loop thing as his vision of a model for time travel. That may be a different deal altogether. I'm talking about the good old H. G. Wells stuff. So either you can side with me, or side with Michio, who was quoted in another thread as saying... "Once confined to fantasy and science fiction, time travel is now simply an engineering problem" - Michio Kaku Ain't gonna happen. Ain't ever gonna happen. Is my common sense logic flawed here?