[alasdair_]

>That is incredibly arrogant and so far wrong it's not even close to the truth.

This seems like fact to me. The whole point about McDonalds is that they have perfected their processes so well that there is very little difference in quality and output between someone who has spent 20 years making hamburgers and someone who has been there a month.

If someone is capable of being a dentist, they can likely make hamburgers. The reverse is probably not true - some portion of the people making hamburgers likely don't have what it takes to make it through dental school.