The Planet Money folks talked to an efficiency expert today. Normally Matt LeBlanc, who bills himself as a "lean expert," helps companies figure out how to trim wasteful costs. He gives David Kestenbaum and Caitlin Kenney some examples of how his job works, and explains just how much time can be saved by making things more efficient. And it turns out it is very hard for LeBlanc to turn off his efficiency-seeking radar. Take a listen by clicking here .