R ICHARD Lempert is a distinguished evidence scholar, one on whose work I relied in my article in the Stanford Law Review,' which forms the text for his conference paper.2 His paper, critical but courteous, does me the honor of taking my article seriously and makes a number of nice points-for example, on the cost profile of discovery,3 on the Weitzman search model,4 on harmless error,' and on the hearsay exception for records.6 He also improves on my economic analysis of the bus case.7 I shall turn presently to the areas of our disagreement, which are many. But let me begin by remarking the defensive note that his paper sounds, the note of legal specialists defending their domain against invasion by economists or, worse, by lawyers who think like economists or, most irritatingly, by lawyers whose professional experience makes it difficult to dismiss what they have to say in the vein of economics as the ravings of a completely ignorant outsider to whichever field of law they want to put under the economic mi-