9e7742db_ime_manipulation___Heroes_Wiki__Theory
[Citations] None [Notes] + It is impossible for a person to exist in the same timeline as their future or past self, yet both Peter and Hiro have existed with their future selves in the same timeline. Without space-time manipulation, if someone were to somehow travel through time, the version of them from that timeline and all of their decendants up to that point would disappear because they would then exist at that timeline instead of their original timeline. [Theory] 
Space-time manipulation makes the user immune to the laws of time and space.
Theory:Space-time manipulation - Heroes Wiki
Theory