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Interpersonal Intellectual functions and Persuasion

“A person may seek principles not only to test his own judgement or give it more support but also to convince others or to increase their conviction. To do this he cannot simply announce his preference for a position; he must produce reasons convincing to the others. Reasons may be very particular, but they also can be general considerations that apply well to a wide range of cases and point to a particular judgement in this instance. If these judgements in the other cases are ones the other person already accepts, then the general reasoning will recruit these cases as evidence and support for the judgement proposed in the present case. Principles or general theories thus have an interpersonal intellectual function: justification to another.”


An excerpt from R.Nozick‘s book “The Nature of Rationality” .

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Books I’ve recently read (and enjoyed)

The Nature of Rationality

by Robert Nozick

“Robert Nozick always attacks his problems in a disconcertingly original way.  The questions he addresses are fundamental in the true philosophical sense: Why exactly should we want to act and believe rationally? Why should we formulate principles of action and try to stick to them? The questions are not moral but explicatory. He is not out to argue that unprincipled or irrational behavior is immoral; rather, he invites us to consider what we are trying to do, and what the justification for such behavior is.

To Nozick, rationality and belief are each an evolutionary adaptation to a world that changes in nonregular ways. Our acts resonate with symbolic meaning and ‘stand for’ our principles and beliefs. In this boldly original . . . inquiry which will reward serious students of philosophy, Nozick uses decision theory to propose new rules of rational decision-making that take into account the symbolic, practical, and evolutionary components of our behavior . . . . this challenging treatise champions reason as a faculty that enables us to transcend our mere animal status and to strive toward goals by the light of principles.”

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