Coupla years ago someone asked on TB if you were able to travel in time would you go into the future or the past and why. Assumption is that you are an observer not a player. Part of a common psychological test as I recall.
I went for the past. Laid out a few things I'd have like to have seen (like being ringside at a Tyrannosaur duke out) but was probably more comfortable with what I know and frightened by what I don't.
Try your luck and don't forget the "why".