Neglecting win-win help

Abstract

Consider three kinds of acts: S. Selfish – helps you, and no one else. A. Altruistic – helps others, at a cost to you. M. Mixed – helps others, and helps you. To someone who is honestly and simply selfish, acts of type A would be by far the least attractive. All else equal such people would do fewer acts of type A, relatives to other types. Because they don’t care about helping others.