“Indeed, in the average study, senior year of college brings more than twice the pay increase of freshman, sophomore, and junior years combined. Unless colleges delay job training until the very end, signaling is practically the only explanation.”

The author genuinely can’t conceptualize that people who fail out in the fourth year might, on average, have learned less in the first three? The line “practically the only explanation” even calls out the flaw in the author’s own logic. Lol.