Shields, Brooks on Acela eavesdropping and the World Series

When the stars line up and columnists Mark Shields and David Brooks, and Hari Sreenivasan can all be on the same space-time continuum, we join up for the Doubleheader.This week they begin with the eavesdropping incident heard around the Twittersphere. We move on to Stephen Colbert's suggestion that Shields and Brooks mud wrestle, plus the gentlemen's picks for the World Series.