hahaha.. it is very normal to humans to protect there egos and stand for the things they know right.. sure thing, if they will admit that they're wrong their credibility will surely fall and no one will gonna believe them again..
as what samconly1 said, if time travels are possible, the most common to us human is to go back. but then, there was no clear evidence. but I insist that time travels isn't possible because of the unexplain mysteries.. it can be from future..
sinungaling yung nagTIE.. tie daw amf.. di kaya takutan laban paano mo masasabing tie?.. tsk3