ABSTRACT
Several of the chapters in this book have referred to the remarks that Allen Newell (1973) made at our cognitive symposium six years ago, which he titled, “You Can’t Play Twenty Questions with Nature and Win.” These remarks came to my mind also while I was reading the drafts of the preceding chapters by Sorenson and Cooper, Fay, and Sternberg, Monsell, Knoll and Wright. What I think these papers show, and what I want to demonstrate, is that there is a way to win that Twenty Questions game.
