I'm not sure I like the investment analogy for ones career since you have to actually put the work in to get the pay. Your time, effort and talent are at least

I'm not sure I like the investment analogy for ones career since you have to actually put the work in to get the pay. Your time, effort and talent are at least as much of a contributor as the medical school tuition. Perhaps a name brand school gives you a significant bump in earning potential on the margins but "incredible returns" still feels reductive of what is essentially a very hard and traditional career path.