[quote=@LegendBegins] A theory with no scientific basis whatsoever. However, if you're referring to the theory that a person dies, time travel cannot heal them because they have already died and were not saved because of the time travel beforehand, then there's some logic, but still a plethora of paradoxes to apply. But we really shouldn't argue theory, since it always ends up heated. Are we doing that now or another time? [/quote] Well, I mean, it's just a sci-fi thing. That's, to my intuition, the strictest way you can apply causality. I can't think of any way stricter.