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James Watt as Intellectual Monopolist: Comment on Boldrin and Levine

In their 2003 Lawrence R. Klein Lecture, Michele Boldrin and David Levine argue that intellectual property rights may be damaging to social welfare. As empirical evidence for their theory they offer James Watt's steam engine patent, claiming that it delayed the Industrial Revolution by as much as two decades. We show that this claim, as well as the more general claim that Watt's story supports Boldrin and Levine's theory, rests upon a distorted summary of the historical record.