So lets see... a dishwasher and doctors pay differs because of what - artificial restriction on the supply of doctors? Sorry, that one statement is about as stupid as I have seen. Market is about supply and demand (although for doctors their is government interference restricting there billings to a certain extent limiting potential income) right? Anyone with a days training can be a dishwasher (a job I held a long time ago for around 5 weeks), it takes close to a decade to become a fully qualified doctor. I guess his argument is that everyone should be able to become a doctor with little or no training (unqualified) thereby increasing supply - and to do this we lower the standard.... to nothing.
No, you are missing the point completely. The average person working in a factory is subject to competition from aboard. The viability of his/her job and wages is a result of a competition across the globe. Despite there being many factors like labour and environmental rules and regs that skew the costs. Professionals on the other hand do not face such competition. A dentist in Canada can buy solar panels made in China cheaper than ones made in Canada. The reason they are cheaper, in large part is producers of polysilicon in China are able to dump the toxic silicon tetrachloride byproduct. Labour cost savings are minimal. Dumping the byproducts on the other hand give a cost savings of ~60%.
The lowly Joe who worked in the plant making solar panels here in Ontario on the other hand , cannot hire a lawyer, doctor, accountant, dentist, engineer, etc. from out of the country to do work for him. All these professions, and more, have in place means to restrict competition. Citing differences in qualifications and standards is hypocritical when the same differences exist in all fields.
Have a look at the uproar from Canadian radiologist when all of a sudden they were thrust into the global workforce...
http://www.cmaj.ca/cgi/content/full/176/1/21
http://www.nationalpost.com/news/story.html?id=1217434
Despite there being insufficient Radiologist to fulfill demand, with an implication for public health, it is wrong to 'offshore'. In manufacturing, despite there being millions (Canada and US) of unemployed workers, it is considered protectionist to try and protect local jobs.
What Dean has done is explain all this in greater detail. He is one of the most intelligent economist around, having also worked with, and cited by Paul Krugman and Brad De Long.