You don't learn from a situation where you do something well. You enjoy it and you give yourself credit, but you don't really learn from that. You learn from trial and error, trial and error, all the time.
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Over and over again, financial experts and wonkish talking heads endeavor to explain these mysterious, 'toxic' financial instruments to us lay folk. Over and over, they ignobly fail, because we all know that no one understands credit default obligations and derivatives, except perhaps Mr. Buffett and the computers who created them.