Responsive regulation: A co-author's appreciation

In this comment, I try to do three things: (i) set the record straight about the disproportionate contributions of my co-author; (ii) briefly comment on the excellent articles by Etienne, Ford, and Westerman in this special issue; and (iii) describe how the Responsive Regulation concept of partial-industry regulation might usefully be extended to tradable licenses and randomized regulation experiments.