Jon Elster: Rations

“In this reconstruction, the idea of reason comprises three elements: impartiality with regard to persons, temporal impartiality, and rational or well-founded beliefs. No doubt we should add goodwill, in order to exclude impartial malice.”

“The premise of this statement is what one might call the principle of non-indirection. I call “indirection” an indirect operation that makes it possible to arrive at a certain result through two successive actions, the first of which serves only to make the second possible. … This principle is not limited to rational actions. … The principle of non-indirection thus expresses a broader idea of coherence that includes the emotional as well as the rational.”

“What, finally, are the functions of reason and rationality in human behaviors? They are the functions, respectively, of the prince’s tutor and his councilor. The tutor teaches the prince to promote the public good in the long term. The councilor tells him how to act in order to achieve his goals, whatever they might be, in the most efficient way. It is not incumbent upon the councilor to impose the demands of reason; but if the tutor has done his job well, the prince will make them his own.”

“The theory of rational action may therefore fail, because it is unable to produce unique prescriptions and predictions. It may also fail if the agents’ behavior does not conform to predictions, whether these are unique or not; that is, if the agents are irrational. There are multiple sources of irrationality, hot or cold.”

“Acting in conformity with reason, in the singular, and acting for good reasons, in the plural, are two different things insofar as reason is objective, whereas reasons are subjective. From an external point of view, we can evaluate a policy as being in conformity with reason or not. From an internal point of view, one can evaluate an action as being rational or not. From this difference it follows that only rationality can be used for explanatory ends. It is only insofar as the agent has made the demands of reason his own that the latter may give rise to, and possibly explain, specific behaviors. The assessment of the actor and that of the observer need not coincide.”

“Let us take first an absurd example: always preferring goods that come on Thursdays to those that come on Wednesdays, solely because of a preference for that particular day of the week. As we shall see, this is not contrary to the principles of rational choice, but it is certainly contrary to reason. The simple preference for Thursdays is a reason, but reason also demands the reason for that reason. And obviously there is none.”

“For a rational actor, the information he uses to shape his beliefs is a variable rather than a given. Before deciding how to act, he has to make a preliminary decision concerning the quantity of resources he is prepared to invest in looking for the relevant facts. A general must not attack before he has surveyed the terrain, or a surgeon operate before he has examined the patient. However, they must not delay too long, for then they may be surprised by the enemy’s attack or flight, or by the patient’s death.”