Can you change the future and prevent a catastrophe—largely caused by human nature—by getting trapped in your own past? On your side are the experience of lived life and the knowledge of where the world will go without your involvement, as well as memory of all humanity’s achievements. Against you will be many people of all kinds who don’t believe in the possibility of catastrophe and don’t need saviors. And it’s so tempting to shrug it all off and use your knowledge just for yourself…