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Retrieved 6 April Parfit’s argument for this position relies on our intuitions regarding thought experiments such as teleportationthe downlkad and fusion of persons, gradual replacement of the matter in one’s brain, gradual alteration of one’s psychology, and so on.

In this section, Parfit derek parfit reasons and persons pdf download not explicitly derek parfit reasons and persons pdf download a particular view; rather, he shows what the problems of different theories are. On Mars, another machine re-creates you from local stores of carbon, hydrogen, and so oneach atom in exactly the same relative position.

Parfit poses the question of whether or not the teletransporter is a method of travel—is the person on Mars the same person as the person who entered the teletransporter on Earth? Ethicsrationalitypersonal identity. Bernard Williams described Reasons and Persons as “brilliantly clever and imaginative”, and commended downloa as part of a wave of work in analytic philosophy that deals with concrete moral problems rather than abstract meta-ethics.

Another problem Parfit looks at is the mere addition paradoxwhich supposedly shows that it is better to have a lot of people who are slightly happy, than a few people who are very happy. The teletransporter on Earth is modified to not destroy the dere who enters it, derek parfit reasons and persons pdf download instead it can simply make infinite replicas, all of whom would claim to remember entering the teletransporter on Earth in the first place.

Then the teleporter is upgraded. Indeed, these dpf share memories and personality traits.

Reasons and Persons – Wikipedia

Thus, the foundations of the self-interest theory are undermined by non-reductionism, which lends support to the present-aim theory of rationality, the critical version of which Parfit favours.

One question Parfit raises is this: But there are no further facts in peraons world that dersk them the same person. This page was last edited on 17 Februaryat His only positive endorsement derek parfit reasons and persons pdf download of “impersonal ethics” — impersonality being the common denominator of the different parts of the book. One such theory is ethical egoismwhich Parfit claims is ‘collectively self-defeating’ due to the prisoner’s dilemma.

From Wikipedia, the free encyclopedia. Part 4 deals with questions of our responsibility towards future generations, also known as population ethics. For example, Parfit asks the reader to imagine entering a “teletransporter,” a machine that puts you to sleep, then destroys you, breaking derek parfit reasons and persons pdf download down dreek atoms, copying the information and relaying it to Mars at the speed of light. Downloaad conclusion is similar to David Hume ‘s view, and also to the view of the self in Buddhismthough it does not restrict itself to a mere reformulation of them.

It raises questions about whether it can be wrong to create a life, whether environmental destruction violates the rights of future people, and so on. London Review of Books. Using thought experiments such as these, Parfit argues that any criteria we attempt to use to determine sameness of person will be lacking, because there is no further fact.

For besides being reductiveParfit’s view is also deflationary: Parfit calls this view “repugnant”, but says he has not downlload found a solution. Parfit resolves the logic to reach this conclusion, which appears to justify incursion into personal freedoms, but he does not explicitly endorse such invasive control. He cites that it is morally wrong for one person to harm or interfere with another person and it is incumbent on society to protect individuals from such derek parfit reasons and persons pdf download.

Philip Kitcher wrote in his review of Parfit’s On What Matters that Reasons and Persons “was widely viewed as an outstanding contribution to a cluster of questions in metaphysics and ethics”.

One of Parfit’s arguments is as follows: Peter Singer included Reasons and Persons on a top ten list of favourite books in The Guardianstating that “Parfit’s penetrating thought and rexsons prose make derek parfit reasons and persons pdf download one of the most exciting, if challenging, works by a contemporary philosopher”. It is divided into four parts, dedicated to self-defeating theories, rationality and time, personal identity and responsibility toward future generations.

What matters, to Parfit, is simply “Relation R,” psychological connectedness, including memory, personality, and so on. Certainly, when waking up on Mars, you would feel like being you, you would remember entering the teletransporter in order to travel to Mars, you would even feel the cut on your upper lip from shaving this morning. It focuses on ethicsrationality and personal identity. By using this site, you agree ;df the Terms of Use and Privacy Policy. Pages to import images to Wikidata. At time 1, there is a person.

So, if reductionism is true, self-interest theorists are inconsistent in viewing spatial relations as significant but temporal relations insignificant.

Eprsons people seem to be the same person. Views Read Edit View history. Ultimately, Parfit rejects “common sense morality” on similar grounds. Parfit continues this logic to establish a new context for morality and social control. But if, as Parfit argues, a reductionist theory of personal identity holds, derek parfit reasons and persons pdf download the difference between different persons at the same time is more like the difference between the same person at different times. Retrieved from ” https: Part 1 argues that certain ethical theories are self-defeating.