vague

" Yes, its a mistake. I know its a mistake, but there are certain things in life where you know its a mistake but you don't really know it's a mistake because the only way to really know its a mistake is to make the mistake and look back and say, yup, that was a mistake. So really, the bigger mistake would be to not make the mistake because then you'd go your whole life not knowing if something's really a mistake or not "

- How I met your mother.