THIS IS TOO PESSIMISTIC

but I am biased to believe that Reason can overcome The Irrational:

Admit it, investors are sheep, fools, predictably stupid losers

So what's the only thing you need to know about behavioral economics? Begin with the fact that you are predictably irrational. Your brain is not only irrational, your behavior is easily predicted. You can be manipulated without ever knowing it. Wall Street knows your brain is your worst enemy, that 88% of your behavior is driven by the subconscious, biases you cannot change. The fact is, Wall Street does not want intelligent investors who think.

The last sentence also applies to many politicians, right-wing talk radio and FAUX News.

UPDATE: 65% of Americans can't name even one Supreme Court Justice