As you might guess, I am in medicine.
I'm in a very specialized field where nobody really understands what I do, which is a good thing...
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There are 200 medical school graduate applicants per residency spot...its because I hardly take call, dont have inpatients, work 8-5, and in top 10 for wages.
While the %'s I gave for usefulness for schooling was abit exaggerated, I truly believe you could get a person with avg intellect to any of the jobs that we do(ok, maybe not a monkey)...key point, we learn most of our jobs once we get there...and it doesnt take a genius to do 95% of our jobs...sure our judgement might not as good as someone with alot of training.
I bet I could be a functioning(not great or even good) endodontist or dentist with 1 year of hardcore on the job training...I think someone with 1 year of intense training could do my job too.
Judgement is over-rated now as there are national guidelines and templates for everything now, esp in my field.