Exactly, you cannot guarantee anything, so dont be cruel by trying to give members the hope of changing their past...One thing i CAN guarantee, is that people have to live with their own decisions, weve been doing that for eons....When evidence comes along regarding changing the past, i will agree with you @Classicalfan626 but until that happens, people must learn to live with their decisions, for good or bad...On the contrary, it is possible to change the past. It may not be easy, but if you took the necessary step(s) needed to do so, you should be fine.
@Monk - You can do your own research, but I can't guarantee you will change your past.