I was going to send this to professors I know, but I didn't want to depress them

The Magic of Education by Bryan Caplan

Think about all the time students spend studying history, art, music, foreign languages, poetry, and mathematical proofs. What you learn in most classes is, in all honesty, useless in the vast majority of occupations. This is hardly surprising when you remember how little professors like me know about the Real World. How can I possibly improve my students' ability to do a vast array of jobs that I don't know how to do myself? It would be nothing short of magic.

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Many educators sooth their consciences by insisting that "I teach my students how to think, not what to think." But this platitude goes against a hundred years of educational psychology. Education is very narrow; students learn the material you specifically teach them... if you're lucky.