that wins. on their backs and swimming? >> tom: there is a vaguely libertarian message there. >> i think so. >> i'm not going to be lectured by education by an animal that eats its own poop, all right? >> tom: should we be phoning e.t.? a growing number of astronomers want to do more than listen to the stars. they want to put out a message to potentially intelligent civilizations. to that and max, and the organization called breakthrough initiatives plans to solicit ideas from around the world about what to say and how to send it. supporters of the effort argue that if we make first contact, aliens could, for example, share cool, new technology with us. but others have reservations. one physicist says, "any civilization by cutting our presence is likely to be technologically very advanced and may not be disposed to treat us nicely." and stephen hawking famously has argued against contact. "if aliens visit us, i think the