Earlier quoted context omitted.
M = Master's student P = PhD candidate M discovers P is wrong and says why. P realizes his mistake and admits it like any honest academic would. M keeps on going on like P is sticking to his guns. P relents again, embarassed, since sticking to his guns would be anathema to his being. M keeps on going on like P is sticking to his guns. P tries harder to make it clear that he's relenting. M keeps on going on like P is…
Ah, okay. It was just the last sentence that threw me for a loop: "Never have I seen someone so distressed at being told he was right." From the anecdote I understood that the PhD candidate was being told he was wrong. Anyway, I promise I'm not a troll, at least not on purpose.
I never realized how evil M was until I thought about it again.