In “The ‘Marketplace’ of Ideas” I observe that
[u]nlike true markets, where competition usually eliminates sellers whose products and services are found wanting, the competition of ideas often leads to the broad acceptance of superstitions, crackpot notions, and plausible but mistaken theories. These often find their way into government policy, where they are imposed on citizens and taxpayers for the psychic benefit of politicians and bureaucrats and the monetary benefit of their cronies.
The “marketplace” of ideas is replete with vendors who are crackpots, charlatans, and petty tyrants. They run rampant in the media, academia, and government.
Think [about] Nazism, Communism, various religions, Rastafarianism, and other -isms without number. Millions of people actually believe these things, often without reservation. The marketplace of ideas at best works only, ah, imperfectly, you might say. You also might say it’s always just a half-step away from disaster.