Law Commons^™

Coase, Rents, And Opportunity Costs, Stewart J. Schwab

Cornell Law Faculty Publications

Professor Posin is to be congratulated on his recent article in this Review, "The Coase Theorem: If Pigs Could Fly," for creating a precise example that purports to disprove the Coase Theorem. Legal scholarship should strive more towards verifiable or falsifiable statements about the law. Of course, falsifiable statements are a risky strategy, and in this case the risk has materialized. Posin's claim—that his example shows a flaw in the Coase Theorem—is false.

Posin's claim is an especially bold one, for his example deals with a shifting legal entitlement between two producers. Most successful attacks on the Coase Theorem have …