Unlike some of the time-travel movies I love, like 'Primer' or '12 Monkeys,' 'Looper' is not about time travel. It's about this situation that time travel creates and the people dealing with that situation. So narratively, the big challenge was to have time travel get out of the way.
The demands are related to their questing of the best possible out of the people concerned. It's this going for the highest possible factor that I'm very concerned about.
As a film actor, you don't often get that opportunity to meet with your audience and take your applause on stage.