system
Given the following post, respond as if you're commenting on Reddit:
human
[Looper] Wouldn't the whole movie have been erased?

Spoilers** after he shoots himself at the end, wouldn't everything go a completely different way?
gpt
Nope, it's a loop.

Take a string, loop it back on itself a couple times.  It doesn't disappear.

HIS First loop, he closes his loop lives a rough life, doesn't meet his soul mate, and gets sent back to close his loop.  He doesn't fight because he's got nothing to live for in this loop.

HIS Second loop, he closes his first loop, lives a rough life, but **does** meet his soul mate, when it's time to get sent back to have his loop closed (the second time), he fights back and gets free.

There are some other loops going on that allow for the variance between his loops.

**Time** itself is not affected by individual loops, only those timelines influenced by each individual person's loop.  Everyone has their own string.  Like a carpet getting tugged on from above/below, with loose strings being woven back into the carpet in other spots.  It looks messy but the carpet isn't ruined.

Edit:  His FIRST loop was actually the life where he was a petty criminal that wasn't saved by the boss of the loopers.