Since the neoclassical textbook lover likes to answer in multiple posts, here goes... 
The most successful economies have been the scandinavians. They are the epitome of welfare states. The other successful economies in the sense of growth have been China and the Asian Tigers, all of which have used either large centralized governments or protectionist measures on infant industries (with the exception of the city-states of HK and Singapore).
All of these are cases of the antithesis of laissez-faire economics which is the whole point of your clearly fallacious argument.
Protectionism goes against laissez-faire free markets. Again, your love for the perfect market is unfounded.

Originally posted by VetLegion
There is nothing welfare about the fastest growing countries in recent history. Protectionism is another thing.
There is nothing welfare about the fastest growing countries in recent history. Protectionism is another thing.
All of these are cases of the antithesis of laissez-faire economics which is the whole point of your clearly fallacious argument.

All countries I know of have used protectionism to some degree at some time in their history. This is not the issue being discussed.
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