playing a lot of dance, dance revolution. >> those were his cousins. >> i know you're smart. did you play a lot of video games growing snup>> i did actually and i think the timing does help. >> has he beaten you to answers you didn't have the answer to? is it all about speed? is that why he's beating ken jennings and your partner. >> the speed only works if he has the answers. he's obviously a very good player. the buzzer is the big difference any night on "jeopardy!" >> why watson? because it's watson founded ibm? >> yeah, thomas watson. >> not hooked up to the internet. it's artificial intelligence. >> it has 15 trillion bytes of data in its memory bank. it's the size of an r.v. it's amazing. >> and it all cycles through that information in a second so it is daunting but there's got to be -- because it is a machine, it's got to be something that does have some weaknesses. >> it does. sometimes when it makes mistakes, you see that it's doing something very different than we do. last night, it said that toronto was a u.s. city, for example, it has a hard time handling humor and puns. >> do you mock him?