institutions were then under the spell of academics at prestigious business schools who were preaching a newly-fashioned theory: the stock market was totally efficient, and therefore calculations of business value - and even thought, itself - were of no importance in investment activities. (We are enormously indebted to those academics: what could be more advantageous in an intellectual contest - whether it be bridge, chess, or stock selection than to have opponents who have been taught that thinking is a waste of energy?)