In this clip, Charlie uses a Classification And Regression Tree (CART) Analysis to try to analyze Don's motivations and determine whether he was actually at fault. This method actually has applications in a variety of fields, including in medicine.
A traffic accident causes a bus of inmates to escape. Charlie and Larry investigate the circumstances surrounding the crash and realize that the series of unlikely events causing the bus accident to occur is a Markov Chain. They conclude that the crash wasn't an accident.