i said to michael crichton, would this satisfy you if i did that and cooked the chemical signal from5-20,000,000 years ago. if i delivered that to the colony in my lab and alarm to them? and he liked that. >> i bet he did. >> he said, could you do it? and i said no. that would not be science. that would just be a circus trick. that is all it would be. he would not be science. you'd be just a circus trick. -- it would be just a circus trick. >> how do you know all that you know and follow all of these spheres of knowledge? you just let your mind take you where you are interested? >> as you brought up early, or maybe i did, i am getting old enough now that i am worrying about the time i have left, but basically i feel young. i have the same excitement over science and discovery as i did when i was a kid. >> to we appreciate science more today? >> more but not nearly enough. i wonder how many real scientists you interview here. probably not many compared to leaders in other branches. >> i will make two points on that. i don't do enough, but i do more than anybody else. >> you do. if it