Suppose it was demonstrated that one out of twenty alcoholics could learn to become a moderate social drinker. The experienced clinician would answer, 'Even if true, act as if it were false, for you will never identify that one in twenty, and in the attempt five in twenty will be ruined.' Investors should forsake the search for such tiny needles in huge haystacks.
Paul SamuelsonMea culpa, mea culpa. MIT and Wharton and University of Chicago created the financial engineering instruments, which, like Samson and Delilah, blinded every CEO. They didn't realize the kind of leverage they were doing and they didn't understand when they were really creating a real profit or a fictitious one.
Paul SamuelsonThe sad truth is that it is precisely those who disagree most with the hypothesis of efficient market pricing of stocks, those who pooh-pooh beta analysis and all that, who are least able to understand the analysis needed to test that hypothesis.
Paul SamuelsonSecond, they [those who disagree with market efficiency] always claim they know a man, a bank, or a fund that does do better. Alas, anecdotes are not science. And once Wharton School dissertations seek to quantify the performers, these have a tendency to evaporate into the air - or, at least, into statistically insignificant t-statistics.
Paul Samuelson