[abi]

That's an interesting point you bring up. Differentiating doctors is even harder than differentiating developers because at the least, developers can show you their work/portfolio. But for doctors, what are the external indicators of goodness? Perhaps, having intelligent conversations with each one might tell you something but even that is merely a fraction of the whole picture. I'd be interested in reading studies about how people pick their doctors (historically and now). Opinions of friends would probably be an important factor. And perhaps, race too.