" The brainteasers also became a lightning rod for criticism as an elitist tool. To those critics, let us say once and for all: You are right. We want to hire the best minds available, because we believe there is a big difference between people who are great and those who are good, and we will do everything we can to separate the two. And if you, our critics, still persist in believing that elitism in hiring is wrong, well, we have just one question for you: If you have twelve coins, one of which is counterfeit and a different weight than the others, and a balance, how do you identify the counterfeit coin in just three weighings?107 "

― Eric Schmidt , How Google Works