colonist forooks, the new york times -- columnist for the new york times. at her opening dinner, david gave a riveting, sobering talk about the subject happiness. in the back of the my mind i have the for a williams song going -- the pharrell williams song going on. the moral versus the economic as we look at the machine age that is coming. david brooks. >> i ask short questions. machines think, humans think, what is the difference? >> i think we both wish that i were thomas these days. you think you have written a book about economics and then somebody shows you what that actually means. machines don't think. a the same way, there is great pioneer of artificial intelligence that said airplanes don't flap their wings. we see cool stuff going on in nature and we build machines that get theire. geeks talk to these uber and i say, are you building artificial brains, they generally say i have no idea how the brain works. i am solving an engineering problem. there are guys who are trying to reverse engineer the brain and put that in silicon. if they are successf