There are certain jobs and specializations in which you can't just be average. You can find a place as an average doctor, but maybe not in neurosurgery. But th

There are certain jobs and specializations in which you can't just be average. You can find a place as an average doctor, but maybe not in neurosurgery. But the real problem is "categorizing" people. You can't know whether someone is cut out for something unless they try, and America in particular does not like that kind of progression (after all, you can't try every career on the planet -- you can easily die never knowing what you are good at). They only really like people who choose to do a career they are good at on the first or second try. Or they like people who can convince others they've never failed at anything.