Then they die and it all has to be re-learned by the next generation, who generally thinks they know it all. But find out differently, mostly when it is too late.
@Paul Ferguson Well, Friedman, the great proponent of trickle-down economics, is full of shit, and wrong here again. People do not learn. That's why economic crashes repeat every 70 to 100 years. After three generations pass, people forget and fall into the same banker traps, over and over.

For wisdom, see Smith, Hume, Marx (but not his solution to the problem), and of course, Keynes: "Capitalism is the extraordinary belief that the nastiest of men, for the nastiest of reasons, will somehow work for the benefit of us all."
weird - I know a lot of people who never learn

governments are run by people no?

this is silly talk ;-)
As usual, libertarian economists are thinking with their arses and talking out their rectums.