Why The Law Is So Perverse by Leo KatzWhy The Law Is So Perverse by Leo Katz

Why The Law Is So Perverse

byLeo Katz

Paperback | November 6, 2012

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Conundrums, puzzles, and perversities: these are Leo Katz’s stock-in-trade, and in Why the Law Is So Perverse, he focuses on four fundamental features of our legal system, all of which seem to not make sense on some level and to demand explanation. First, legal decisions are essentially made in an either/or fashion—guilty or not guilty, liable or not liable, either it’s a contract or it’s not—but reality is rarely as clear-cut. Why aren’t there any in-between verdicts? Second, the law is full of loopholes. No one seems to like them, but somehow they cannot be made to disappear. Why? Third, legal systems are loath to punish certain kinds of highly immoral conduct while prosecuting other far less pernicious behaviors. What makes a villainy a felony? Finally, why does the law often prohibit what are sometimes called win-win transactions, such as organ sales or surrogacy contracts?


Katz asserts that these perversions arise out of a cluster of logical difficulties related to multicriterial decision making. The discovery of these difficulties dates back to Condorcet’s eighteenth-century exploration of voting rules, which marked the beginning of what we know today as social choice theory. Condorcet’s voting cycles, Arrow’s Theorem, Sen’s Libertarian Paradox—every seeming perversity of the law turns out to be the counterpart of one of the many voting paradoxes that lie at the heart of social choice. Katz’s lucid explanations and apt examples show why they resist any easy resolutions.


The New York Times Book Review called Katz’s first book “a fascinating romp through the philosophical side of the law.” Why the Law Is So Perverse is sure to provide its readers a similar experience.

Leo Katz is the Frank Carano Professor of Law at the University of Pennsylvania Law School. He is the author of Bad Acts and Guilty Minds: Conundrums of the Criminal Law and Ill-Gotten Gains: Evasion, Blackmail, Fraud, and Kindred Puzzles of the Law, both published by the University of Chicago Press.
Title:Why The Law Is So PerverseFormat:PaperbackDimensions:256 pages, 9 × 6 × 0.9 inPublished:November 6, 2012Publisher:University of Chicago PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:022600581X

ISBN - 13:9780226005812

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Table of Contents



Part I. Why Does the Law Spurn Win-Win Transactions?

1. Things We Can’t Consent to, Though No One Knows Why

2. A Parable

3. Lessons

4. The Social Choice Connection

Part II. Why Is the Law So Full of Loopholes?

5. The Irresistible Wrong Answer

6. What Is Wrong with the Irresistible Answer?

7. The Voting Analogy

8. Turning the Analogy into an Identity

9. Intentional Fouls

Part III. Why Is the Law So Either/Or?

10. The Proverbial Rigidity of the Law

11. Line Drawing as a Matter of Life and Death

Part IV. Why Don’t We Punish All We Condemn?

12. The Undercriminalization Problem

13. Multicriterial Ranking and the Undercriminalization Problem

Final Thoughts