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Anyone whose ever been to a bad dentist would see the merit in this. I have been to a bad dentist after my dentist moved. He was licensed. I told everyone who asked that he was a bad dentist and I found a better one.

I don't see how licensing makes a difference.

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The difference is a bad experience and real harm.

When anyone can practice dentistry, both the range of bad experiences and their distribution gets much worse.

I would argue that licensing drives up the average quality of the professional. This should be necessary for a profession that can cause pain (or hand out drugs) like dentistry, but not for something like a hair stylist where it wouldn't really matter.

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