"So you want to save the world. As it turns out, the world cannot be saved by caped crusaders with great strength and the power of flight. No, the world must be saved by mathematicians, computer scientists, and philosophers."
Interesting break-down of an approach that answers the question "You are given an n-sided die where side i has probability pi of being rolled. What is the most efficient data structure for simulating rolls of the die?"
"So suppliers are trapped in a race to the bottom, unless (a) they can find some clear value-added proposition to attract consumers other than low price, or (b) they can work out a way to reduce price transparency in order to impair the accuracy of consumers' pricing decisions."