1. Jeffery's decision theory improves on Savage's by replacing states and outcomes with possible worlds;See Katie Steele & Stefansson H. Orri, DECISION THEORY STANFORD ENCYCLOPEDIA OF PHILOSOPHY,1965
2. Only considering "aspects of possible relevance" does not help much on this score. The huge amount of possibly relevant facts is obvious upon reflection. 15 I omit the price term (the $100) because Shavell allows that to deviate from the actual contract;Hence I think it is more charitable to take Shavell as thinking about possible worlds. On possible worlds,2017
3. Why Breach of Contract May Not Be Immoral Given the Incompleteness of Contracts
4. When Social Norms Overpower Competition: Gift Exchange in Experimental Labor Markets, 16;See Ernst Fehr;J. LABOR ECON,1998
5. A Theory of Fairness, Competition, and Cooperation;Ernst Fehr;Q. J. ECON,1999