Some people just can't learn... and some people just dont know how to learn. Check out this story about how an answer can be slapped on someones face so many times, but still won't be picked up. Amusingly enough, it's exactly the same kind of problem I have at work every day. =)
Just an aside, here's the guy who didn't know what apache looked like, and aparrently couldn't even read the text that's displayed on the default screen.