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8 - The trap's dilemma

Published online by Cambridge University Press:  24 December 2009

David Lewis
Affiliation:
Princeton University, New Jersey
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Summary

The Bicentennial year is a fit time to recall an early contribution to ‘regional philosophy’. In the year 1879 Edward Kelly put forward this ingenious argument.

I would like to know what business an honest man would have in the police. A man that knows nothing about roguery would never enter the force and take an oath to arrest brother, sister, father, or mother if required and to have a case and conviction if possible. Any man knows it is possible to swear a lie. And if a policeman loses a conviction for the sake of [not] swearing a lie he has broken his oath. Therefore he is a perjurer either way.

At first glance, Kelly's example seems to fit right into present-day discussion of moral dilemmas, as follows. If the unfortunate policeman has taken an oath that obligates him to swear a he under certain circumstances, and if those circumstances arise, then he has no right course of action. Either he takes a second oath to tell the whole truth and nothing but, and then he breaks it by lying; or else he doesn't, and thereby breaks his first oath to do everything possible to secure a conviction. Kelly's conclusion also looks familiar: it is because of his previous wrongdoing that the policeman afterward has no right course of action. An honest man would never have taken the first oath.

I think this first glance is misleading.

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Publisher: Cambridge University Press
Print publication year: 1999

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  • The trap's dilemma
  • David Lewis, Princeton University, New Jersey
  • Book: Papers in Ethics and Social Philosophy
  • Online publication: 24 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511625114.009
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  • The trap's dilemma
  • David Lewis, Princeton University, New Jersey
  • Book: Papers in Ethics and Social Philosophy
  • Online publication: 24 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511625114.009
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • The trap's dilemma
  • David Lewis, Princeton University, New Jersey
  • Book: Papers in Ethics and Social Philosophy
  • Online publication: 24 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511625114.009
Available formats
×