special skills, 50 words per minute, powerpoint, smallpox. >> larry: you could have a lot of fun with this. do you accept the humor of it? >> i do. and we think hollywood likes david versus goliath stories, right? however, it could be goliath versus the mosquito in real life. they could be that advanced, we could be mosquitos. however, even goliath is not going to go where there is a swamp of mosquitos. so even though our technology may be primitive compared to goliath, it's not going to be a one-to-one combat like in science fiction. they may avoid us. >> larry: as a noted physicist, what puzzles you the most? >> what puzzles me the most, why aren't they here? if they're so expensive and so galactic in their scope, and billions of years more advanced. and i think the answer to me is pretty clear. we're not on their radar screen. we're simply too insignificant to them. >> larry: seth, is there any science fiction movie that came close to capturing what you think might be?