Vital Signs: why 'the marketplace for ideas' can fail – from an economist's perspective

Written by The Conversation

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There is no shortage of repugnant and dangerous ideas in the world. An age old question is whether free speech will see good ideas win out over bad.

The proposition that good ideas eventually triumph in “the marketplace for ideas” dates at least to 1644, when John Milton wrote in his anti-censorship tract Areopagitica:

Let...

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