> This is one of the things that make you ask "why didn't I think of that?" when you hear of them, and I think that's generally the mark of an ingenious idea.

> This is one of the things that make you ask "why didn't I think of that?" when you hear of them, and I think that's generally the mark of an ingenious idea. The trapdoor function of genius: ideas which are very difficult to identify, but very easy to recognize.