>>140
As I said, that only deals with sub-light stuff and using actual down-to-Einstenian-mechanics forces. You can't just use good old classic mechanics when talking about time travel and say oh noes, FTL (faster than light) is impossible.
There could well be a way to "jump" to FTL space and skip the whole energy going to infinity problem. And what I said before was compare going jumping forward (or whatever direction) in space faster than light to jumping forward in time, oh, faster than the current pace time is going. I just never thought of it like that before.
>>141
Time paradox.