User blog comment:HMSHOMEMADE1011/What are we allowing?/@comment-11135771-20140810035424

As far as I'm aware, there aren't really any rules short of "whatever you don't get yelled at for" and "use your judgement". I know that warp drives are pretty well established to exist (especially since I figured out a way to make them in game) since they're needed to travel between Earth and Neo-Earth, but beyond that very one pretty much just makes up whatever unless people disagree with it.