That&#x27;s the &quot;invisible hand&quot; - different concept.<p>Invisible hand: two people following their own greed by engaging in a non-coerced, knowledgable exchange, produce a surplus benefit, in which both individuals are better off.<p>Munger test applied to the idea of the invisible hand:  Does it work for greedy people?  yes. If one party won&#x27;t be better off as a result of the exchange, they won&#x27;t participate.<p>Munger test applied to the idea of increasing revenue by increasing tax rates on the ultra-wealthy: Does it work for greedy people?  Not linearly, because they&#x27;ll have a great incentive to find ways to restructure or shelter their income from the increased taxes.