Why does the future always happen 'first' in the movies (SPOILERS)
Ok, I'm fully aware that this is just an animated movie, but this argument applies to many time travel movies/shows. Maybe I'm just figuring it out wrong, but why is it that the future seems to happen first, then someone goes back in time to set the future in motion. Examples:
1) Fry being Lars. It seems like Lars existed first in the future, then the younger Fry went back in time, and said "I'm Lars!", and THEN went to the future to be Lars. That doesn't make sense does it? There shouldnt be a future Lars in the first place to make Fry realize he's Lars hah.
2) Where did the timecode come from? It seems the only way for the movie to make sense is for Lars to have it in the first place, but where did he get it from?
I'm only posting this to see peoples opinion about time travel paradoxes and stuff. This arguement can be applied to movies like the terminator as well.(sending back someone from the future to father you..?). Just seems weird.