I'm too tired to explain it here, but I like the explanation of time travel in the book Cowl: http://en.wikipedia.org/wiki/Cowl_(novel)
Re:What Movies Get Wrong About Time Travel
by run4yourlives on Friday August 14, 2009 @02:21PM
(#763535)
Sounds like a good book... thoughts on the story?
Most movies go that way too, since otherwise, the plot would be fatalistic (eg: '12 monkeys'). So they aren't really wrong.