I consider transactions involving asymmetric prisoners`dilemmas between pairs of players selected chosen from two large populations. Games are played repeatedly, but information about cheating is not adequate to sustain cooperation, and there is no official legal system of contract enforcement....

Despite evidence to the contrary, three common myths persist about federal regulations. The first myth is that many regulations concern the environment, but in fact only a small minority of regulations are environmental. The second myth is that most regulations contain quantitative estimates of...