Terence Tao's Raw Notes After His Princeton Comprehensive Exams (1999)
When you have a genius-prodigy guy like this being 'examined' -- the professors ask him questions, some (many?) he doesn't know the answer to, or perhaps an incomplete answer to, while they (presumably) do know.    Is this because they're equally genius as him?  or are 'merely' much-better read than him, although maybe not as gifted in whatever other magical ways he is?