Big problem with medical care these days is the fact that the medical profession has become slaved to the insurrance and pharmacudical companies, not the requirement of degrees. I do think that the American mentality to discount out anyone without a fancy college degree has robbed the country of a lot of tallented people in a lot of areas, medical profession included, but hey, its the way things are.
And anyway, when did I say that I thought the rank system was special? As I said, the rank and degree system in martial arts isn't foolproof in terms of insuring the quality of the rank's holder. There are those who strike out on their own and promote themselves to grandmaster who may or may not have the qualifications to hold that (or any) title. But the rank system is just a rank system. Nothing more or less, and is as good as the substance behind each rank.
At the same time, those old masters you mention had 'rank' in the eyes of their peers. It wasn't called 'dan' rank, but was based on their skill and knowledge of the art. I have no problem with modern dan ranks, but I do feel that they should mean something.
Back to doctors for moment, a vascular surgeon with degrees in that specialty is "qualified" to do what he or she does. Doesn't make them the best and it doesn't make them immune to mistakes, but it does mean that they have the knowledge and training. I have seen so-called masters who have neither.
And that is really the only beef that I have with the modern rank system. Within one organization, the minimum standards for each rank should be clearly defined and adhered to. I can accept that standards for each rank and title differ between orgs. But within an org, you shouldn't see a master with the skills of Bruce Lee and another master of equal dan rank who can barely break a Ritz cracker.
In the end, I'm neither a proponent nor opponent of the belt/rank/title system. It is what we have to work with and it isn't going away. We have two choices: stay in and deal or start our own org that dispenses with all titles and rank save teacher and student.
Since I don't consider myself good enough to do the latter, I'll stick with the former and make certain that when people see me spar or practice my poomsae that they don't think that my belt is from a Cracker Jack box.

Daniel