What a dumb statement.

Everyone IS trying to change the future by doing all sort of things, big and small. That's all we are actively doing when we go about our daily lives. Making decisions hoping we can influence our future, a lot of them conscious ones.

As for the time travel, obviously knowing how the present transpired you can think what you could have done differently, and try to change that.

For the future, noone is thinking "oh yeah, I'm doing things that will destroy me" and keeps doing them.

That pseudo philosophical statement is so bad.. So, so bad..