In part one yesterday, we looked at stats of the Boston Red Sox bullpen, a typical example of baseball’s tendency to find special cause in just about anything.

In March 2011, Leonardo Bonanni was preparing to defend his Ph.D. thesis about Sourcemap, software that lets consumers map every connection of a product supply chain on a digital map, when tragedy struck in Japan.

A trained mechanical engineer, Mark Chang found himself “totally uncertain and unprepared” the first time he was called on to hire someone else.