I know his name. I've been told to interview him. He crops up in the book because I always had this vague hunch that things like sunk cost bias and indeed loss of version. Under certain circumstances couldn't really be described as a bias because, first of all, evolution would have corrected them,. if they'd been that consistently bad. And so there's something there which is, if you think about it, then the avoidance of significant misfortunes are perfectly rational affair.