Mistakes

- Ok, yes, it's a mistake. I know is a mistake. But there are certain things in life where you know it's a mistake, but you don't really know it's a mistake because the only way to really know it's a mistake is to make a mistake. And look back and say 'Yes, that was a mistake'. So really, the bigger mistake would be not make a mistake because than you go you're hole life not really knowing if that was a mistake or not. […] Does any of this make sense to you?

- I don't know, you've said mistake a lot. 

(How I Met Your Mother, ep. 21, first season, Lilly and Ted)