marvin minsky got on the phone and said, tell me about dan dennett. the greatest philosopher since russell. six was later identified checking and let me read you what you said about dan dennett, the greatest philosopher since russell. and i said what. [laughter] what i meant, he was great but he is only philosopher that understands what we do. but you become one of the people that does the real stuff. so where is cognitive science and philosophy begin. let's talk about the role of philosophy in a.i. because frankly i don't get it. i don't understand it. there is a subfield in a.i. which is funded with cognitive science that roughly occupies the position to experimental physics and that is that people who have done their homework they know the technology that they know how to probe but they're interested in theoretical questions and they're interested in helping the engineers in the anti- people sort out and understand what they're up to. >> a subfield of philosophy in a.i. >> yeah right. it's been my good fortune to be tutored over the last 30 or 40 y