There was a resident I worked with who would always ask some hyper-intellectual question during lecture. Like: "You say that Intervention X didn't work, but a study done in 1998 showed that Intervention X was effective in at least three quarters of men over age 50."
And you're like, "Guh?" And you're all impressed that he could just randomly recite studies on seemingly any topic. You think he's definitely the most knowledgeable of all the residents.
However, if you asked him a directed question where there is one right answer, you discover that he actually didn't know some extremely basic things.
It's amazing how good some people are pretending to be smart.