I have decided that the expression "hit the nail on the head" is really stupid. It is meant to convey an unusually high degree of accuracy, rivaling if not surpassing that described by "Bullseye." But while, in darts, you can be really close to the center of the dartboard and not get a bullseye, in hammering if you don't hit the nail on the head, you've missed it altogether. So in order for the cliche to reflect the meaning of its real world inspiration, people would need to say "you really hit the nail on the head with that one" anytime someone makes a comment or gives a response that is not completely incorrect or irrelevant. That would make this the most meaningless idiom I can think of. Am I overlooking something worse?