What good are doctors?

Went to a doctor about my knee and ankle. He had no idea what to do, but worse, he had no idea how I could help myself either. These are the questions I asked and the answers I got:

What is wrong with my leg?
Don't know

Should I stretch regularly?
Don't know

Is it OK to run regularly?
Yes, but you should stop if it hurts

It hurts all the time, should I run?
Don't know

Should I see a specialist?
I am a specialist

I'm glad my company paid for that visit. Mind you, I waited an hour for that insightful diagnosis.

Oh, he said come back if it gets worse...