You're no good and you don't even know it

"In order to know how good you are at something, requires exactly the same skills as it does to be good at that thing in the first place. Which means - and this is terribly funny - that if you're absolutely no good at something, at all, then you lack exactly the skills that you need to know that you're absolutely no good at it.

This explains not just Hollywood, but almost the entirety of Fox News." ~John Cleese