PROFESSORIAL PROOF

The Friday File: For almost 20 years, the average in Brown University’s Welfare Economics and Social Choice Theory in-class midterm was 65-80. This year it was take-home; the average was 96. Suspecting AI cheating, the same professor who taught the course since inception made the final in-class. 18 students dropped, nine didn’t take the final, and the average fell to 48.6 from, at worst, a 65. QED (quod erat demonstrandum).