sean carroll conversation, why quantum physics, why quaum mechanics, and w on tv?rter: well i was a kid who never took science classes, never understood scien i convinced myself i had no aptitude for science. d a couple of years ago, i started thinking about, "gee, i'd kind of like to know what reality is." i'm getting a little old now. and seanarroll is really one of our great science communicators. he's a physicist at caltech. and sean carroll is a proponent of a controversial theory called the many worlds theory, which suggests that there ariple universes. for example, when a scientist is observing a tiny particle, like an electron, another copy of the universe is created, including o another coyourself. so, he would say-- y sreenivasan: so there's infinite copies rself in all of these different universes right now. >> reporter: there are haris evywhere. ( laughter ) >> the people in other worlds aren't me. th might have come from th same youngster as i did-- >> reporter: they might have-- >> --but they're a different person. >> reporter: slow, slow, slow, slow

thank you to sean carroll. we are in a going to come around and get your questions don't forget the book is for sale and sean will shauna will be signing them after. hi, the most agreed-upon theory of cosmology i can fill that in. my question was a does the many worlds interpretation make this problem worse because now there is many superposed quantum states. for those of you that don't hang out on the wrong street corners the idea is that if we lived in the high-tech equivalent of a box of gas that lasted forever the gas that is the atmosphere in this room basically stays smooth and spread out. the individual molecules are bumping around. if we waited long enough all of the molecules are moved to one side of the room or they would make a little catch. if the universe was like that and it was number one made out of little tiny pieces and lasted literally forever there are mineral things. it would be enough where adams were created that made a brain that was conscious enough to go and look around and say all empt