$1,000. [cheers and applause] >> good way to start. good way to start. >> that's how we do it. >> absolutely. >> you're on a roll. here we go, man. let's go. that was your first question. here's your next question. here it is. suggested by da vinci's vitruvian man diagram, the length of a person's wingspan, on average, is equal to their what? >> okay. okay, so when i first saw the question, i was hoping for some good answers that could help me get it, and if feel like... "suggested by da vinci's vitruvian man diagram, the length of a person's wingspan"-- wingspan--"on average, is equal to their..." okay, so i don't think my weight would have anything to do with it, because i don't understand how that could be. >> right. iq...not really--same thing. age--it doesn't change. so i'm gonna have to go with "c," height, final answer.