Dr. Sowell on medical care
In The 'cost' of medical care, Dr. Sowell makes a vital distinction:

The difference between prices and costs is not just a fine distinction made by economists. Prices are what pay for costs -- and if they do not pay enough to cover the costs, then centuries of history in countries around the world show that the supply is going to decline in quantity or quality, or both. In the case of medical care, the supply is a matter of life and death.

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