Proof

So, here's an interesting comment:

Common knowledge doesn't need "proof".

Um, yes it does, at least when that "common knowledge" is anything but common knowledge.  Unfortunately, too many people think that the things they believe are common knowledge, and so, common knowledge does require proof.  Whomever made that comment probably had no business going to college.  I say this because in college, or even high school for that matter, one is not required to provide sources for common knowledge.  For example, I might say that according to Einstein, E=MC^2.  I don't need to provide a source for that, as it is considered common knowledge that this is Einstein's Theory of Relativity.  However, if I were to simply state that E=MC^2, it actually would be okay for someone to ask for proof.  And, no, in this case, saying that Einstein said so isn't sufficient proof.  It's not even a good argument.

And yes, I take this as at least additional evidence that some people don't belong in college, although I have to admit, it isn't proof.