Hundreds of people prosecuted for practicing "interior design" without a license.
marginalrevolution.com
marginalrevolution.com
SIR – Lexington seems to have confused interior design with interior decoration. The interior-design profession is regulated because the designers provide services that carry substantial risk of harm if performed by unqualified people. They design spaces in a manner that can, among other things, reduce the likelihood of the spread of germs and disease in hospitals; increase productivity in commercial offices; and encourage learning in schools. Most important, they understand buildings from the users' perspective.
Interior designers are required to know about building codes, mechanical and electrical systems, fire suppression methods and sustainability measures. The “state-mandated test” that Lexington referred to was developed by our organisation and examines a designer's competence in these areas: it does not cover “fabulous taste”.
Jeffrey Kenney, Executive director, National Council for Interior Design Qualification, Washington, DC
"Separation of state and economy" is about as likely as "separation of medicine and chemistry".
I contacted David Friedman about that. He says that the publisher holds the copyright, not him. I actually think they would sell more copies if people were able to link to it online.