Well th thing is that the future hasnt happened yet until we make it happen. So saying that what you said is impossible. and im sure if that did happen they would tell anyone but then maybe one person will and thats how we would get time travel
Kinda, now you see, if someone rich came from the future and he started buying us all out, if he would ultimately be stopped 1 year from when he came, he would've been gone then because the future was predicted. The future was also then predicted when he was from the future he was originally from, so he cannot disappear as soon as he comes otherwise he therefore wouldn't be at his original future, so he can only disappear once the actions made have been done and he will then disappear.
And yeah, if you go back in time you can't go forward because your atoms would be slightly more deteriorated and thus out of phase, something like that.
Besides time travel won't help anyone, because you're literally changing the future no matter what:
1. Go in the past you change YOUR present.
2. Go in the future you change YOUR future.
Because if you go in the past, someone can think "Wow what a peculiar fellow isn't he?" and then he gets taken away in his head from the particular thought (I do that alot), in the end making him act differently to other people - making them react differently, which spreads, spreads and spreads.
Meanwhile if you go in the future it's not on such a large scale, maybe. You see the future "Wow!" bla bla bla, then what? You just go to your time with NO effect on you whatsoever? Ha, good luck
You will atleast be thinking about it and get taken away from what you should have originally thought, making a different timeline. Which is weird, like Google Translator, type something in on Google Translate, put it in Japanese (future), then English (new present), then Chinese (new future), then English (newer present), you'll see they keep changing. The more you go back and forth - the more it'll change:
http://www.conveythis.com/translation.php
Try that out, type something in, translate it the maximum amount of times (54) and bam, it's completely different.
- H