Those that can’t do teach , those that can’t teach ,end up at Harvard ?
My Dad,who never attended college (Depression baby,parents couldn't afford it),wound up supervising many Harvard (and MIT) grads during his career.He had a couple of funny sayings about Harvard..."you can always tell a Harvard man but you can't tell him much" and "how do you like your oysters? Raw,raw,raw." ("raw" was said in a phony upper crust accent).
I,too,have had much contact with Harvard students/grads.Never supervised any though.I worked at one of the large Harvard hospitals for many years and many of the doctors (junior and senior ones) were Harvard grads.You could always tell the Harvard grads from grads of other schools because they could talk for 6 hours about the uvula but were clueless when you handed them a pop-open umbrella.