edy-trading-screws-up-the-market/ 7. The sheepskin effect http://modeledbehavior.com/2012/02/09/caplan-and-the-sheepskin-effect/ 8. "Education Gap: Sabrina Tavernise reports that a racial divide in education is narrowing, but the gap among rich and poor is growing. "The changes are tectonic, a result of social an