gravesite. so if you imagine a future a.i., artificial intelligence, that's very, very smart, can take all this information and create an avatar, that avatar would pass a test being indistinguishable from the original frederick kurzweil to people who knew him. >> is it ethical? people question the ethics around scientific advancement for years. >> it is ethical to overcome human suffering. if you have a better treatment for cancer, is that ethical? i mean, nobody debates that. >> yeah. any advice for me as i'm going down my path to longevity? >> you've got a very good shot, you know, 15 years from now getting the benefit of the full maturation of the biotechnology revolution. and that's just a bridge to nanotechnology and ultimately go out enough decades, being able to back up who you are and expand who you are. i think you're on a very good path to do that. >> ray. thank you, ray. an absolute pleasure. [ male announcer] surprise -- you're having triplets.