Counterpoint to Six Potential Arguments Against "Regulating Externalities". Cass R. Sunstein, May 13, 2015, Paper. "Here we consider six potential counter-arguments to our paper, “Regulating Internalities.” This is a general rebuttal, not a specific counter-argument against Dudley and Mannix (2015), which appears in this same edition; but we believe that the arguments that we rebut include the major claims set out in that paper..." Link