On Optimal Legal Change, Past Behavior, and Grandfathering
NBER Working Paper No. 13563
---- Acknowledgements ----
I thank Louis Kaplow, Saul Levmore, A. Mitchell Polinsky, Eric Posner, Richard Posner, Chris Snyder, Kathryn Spier, Robert Stavins, Roberton Williams, and an anonymous referee for comments, John Howell, Christopher Taggart, Jane van Lare, and Paul Vronsky for research assistance, and the John M. Olin Center for Law, Economics, and Business at Harvard Law School for research support. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.