The most useful form of time travel would be to go back a year or two and rectify the mistakes we made.

Time travel is such a magic concept.

There’s a difference between a mistake and a regret. Everything up to this moment has made this moment. If you can change a mistake, then go out and do what you can to change it. If you can’t change it, there’s no use regretting it because it will just make you miserable. Live right now, even if that involves dealing with the consequences of your actions. Time travel always ends badly.

Are you saying that we can affect what happened in the past? That we can change it?

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

It was probably the first time I ever did that. I don't think it was a travel, either. It was real exciting. It gave us some momentum.