alt Hacker News> if you presume they are honest, they tend to be honest. The students loved it, I loved it. If anyone cheated, the students would turn him in. Nobody ever bragged about cheating, 'cuz they would have been ostracized.
I think if you look at the 2012 Harvard cheating scandal, it's clear that this isn't true. There, the professor presumed honest students, hundreds cheated, and no student reported.