Finally, here is a mathematical proof that the “heuristics” used by traders and derived bottom-up are both more robust and more rigorous (mathematically) than the pseudomathematics used by economists.

The best way to beat economists is to be more rigorous mathematically than they are, not discard the math.

http://www.fooledbyrandomness.com/OptionPricing.pdf

via Finally, here is a mathematical proof that the… – Nassim Nicholas Taleb.