1 Background for the Uninitiated RICHMOND CAMPBELL Paradoxes are intrinsically fascinating. They are also distinctively ...

The Prisoner's Dilemma (PD) exhibits a tragedy in this sense: if the players are fully informed and rational, they are condemned to a jointly dispreferred outcome. In this essay I address the following question: What feature of the PD's payoff structure is necessary and sufficient to produce the tragedy? In answering it I use the notion of a trembling-hand equilibrium. In the final section I discuss an implication of my argument, an implication which bears on the persistence of the problem (...) posed by the PD. (shrink)

The 'Evolution of Cooperation' addresses a simple yet age-old question; If living things evolve through competition, how can cooperation ever emerge? Despite the abundant evidence of cooperation all around us, there existed no purely naturalistic answer to this question until 1979, when Robert Axelrod famously ran a computer tournament featuring a standard game-theory exercise called The Prisoner's Dilemma. To everyone's surprise, the program that won the tournament, named Tit for Tat, was not only the simplest but the most "cooperative" entrant. (...) This unexpected victory proved that cooperation - one might even say altruism - is mathematically possible and therefore needs no hidden hand or divine agent to create and sustain it. A great roadblock to the understanding of all sorts of behavior was at last removed. The updated edition includes an extensive new chapter on cooperation in cancer cells and among terrorist organizations. (shrink)

This book argues for a radically different approach to traditional and important problems of moral philoosphy. The book discusses three theses; the diversity of moralities and moral judgements, their normativesness, and their possible rationality.

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1873 edition. Excerpt:...but it does not follow that knowledge is not good. It is more needful that I should be a good Christian, than that I should be able to make good shoes. But this, too, is needful for one who is a shoemaker, and his Christianity is to show (...) itself in his earthly calling, and not to be an excuse for unskilfulness therein. And here, too, the case is similar. It is true that knowledge puffs up, that is, superficial knowledge, the appearance of knowledge, where its reality and solidity are wanting; while true knowledge, and earnest genuine research, makes a man humble and modest. For the more we learn, the more we perceive what we owe to others, and the more we know, the more we perceive how little we know. Heal research, moreover, is impossible without self-denial, devotion, and a feeling for truth which will not be ashamed to confess its errors to itself and others. To investigate is a moral labour, and not a mere exercise of the mind. True science cannot be separated from morality, and true morality has always a religious root, even when this is unconfessed. When we investigate, too, we owe our best discoveries to God; our best possessions are a gift from above. When Pythagoras had discovered his famous geometrical theorem concerning the squares of a right-angled triangle, he sacrificed a hecatomb to the gods. And Kepler concluded his famous work on the motion of the planets with hearty thanksgiving to God. The true disciples of science have ever been the pupils of that heavenly wisdom of which St. James says that it is " peaceable, gentle, easy to be entreated, without partiality, and without hypocrisy." And does not all knowledge, when we go deeply into it, lead is to God? What Bacon said of philosophy, that " a little inclineth mens minds... (shrink)

In a recent issue of this journal, C. L. Sheng claims to havesolved andexplained the Prisoner's Dilemma (PD) by studying it ‘from a moral point of view’ - i.e., by assuming that each player feels sympathy for the other. Sheng does not fully clarify this claim, but there is textual evidence that his point is this: PD's arise only for agents who feel little or no sympathy for each other; they cannot arise in the presence of a high degree of (...) reciprocal sympathy. A high degree of such sympathysolves the PD in that it prevents PD's from arising, and a low degree of itexplains the PD in that it provides an essential condition for the occurrence of that game. This thesis is false, as some examples show. These examples are important; they prevent us from underestimating the problem posed by the PD. (shrink)