April 4, 2000 POSTSCRIPT TO: A THEORY OF TRUSTEES, AND OTHER THOUGHTS "A Theory of Trustees, and Other Thoughts," in Public Debt and its Finance in a Model of a Macroeconomic Policy Game: Papers Presented at a Workshop held in Antalya, Turkey on October 10-11, 1997. , ed. by Tahire Akder. To the other four P's, I must add a fifth, Principle. This is not quite the same as Policy, the P to which it is closest. By "Principle" I mean a desire to take a stand, regardless of whether taking a stand helps to achieve the desired end or not. Suppose, for example, that a politician desires a 30 percent tax cut. He could satisfy Principle, by holding out for 30 percent, knowing that the result will be no tax cut at all, or satisfy Policy, by compromising on a 10 percent tax cut. These are distinct goals. In modelling terms, the Trustee obtains a Principle payoff from taking a particular action; he obtains a Policy payoff from a particular event happening, whether or not it happens because of his action. The Policy goal is advanced, of course, by the Trustee's actions, but he will be just as happy if the event happens without his intervention. Principle is very important for judges. A judge who tries to interpret the law according to original intent or plain meaning is motivated by Principle, and will often obtain Policies that he dislikes. Other judges are motivated by Policy, and their decisions are "result-oriented", independent of the laws they are supposedly interpreting. Central banking has less opportunity for divergence between Policy and Principle, but it still can arise. A central banker, might, for example, find that he could achieve more stable economic growth by doing favors for elected officials. This would go against Principle, but aid Policy. Corporate officers and literal trustees of charitable or other trusts could find themselves having to make similar tradeoffs with respe ct to bribes that would help their beneficiaries. Eric Rasmusen Professor of Business Economics and Public Policy, Kelley School of Business, Indiana University, 1309 East 10th Street, Bloomington, Indiana 47405-1701. Erasmuse@Indiana.edu. Http://Php.indiana.edu/~erasmuse. (812)855-9219. Direct: 812-855-3356. Fax: (812)855-3354.