We are big fans of Richard Epstein’s book Simple Rules for a Complex World (Harvard University Press, 1995) for many reasons. Consider aviation. In place of this convoluted academic analysis, we would advocate for the following simple rule: carriers may not remove a passenger once he or she or it has boarded an airplane and taken their assigned seat. Otherwise, without such a simple rule, efficient Coasian bargaining isn’t possible. (If you have 22 minutes to spare, below is a short video of Professor Epstein lecturing on his ideas.)