Classical game theory is useful in some circumstances if correctly applied. Correct application, however, requires understanding that your opponent is not perfe

Classical game theory is useful in some circumstances if correctly applied. Correct application, however, requires understanding that your opponent is not perfectly rational. This does not enter into most of the game theory exercises I've read. On a related note, Combinatorial game theory (John Conway's study of a very restricted set of games) was described as being the most totally useless branch of mathematics. Conway was very proud of this.