He describes the downsides of having a large online audience, where social networking breaks down. The key insights: large networks can hinder conversation and stifle the exchange of ideas, because socializing doesn't actually scale.

"After all, the world’s bravest and most important ideas are often forged away from the spotlight — in small, obscure groups of people who are passionately interested in a subject and like arguing about it. They’re willing to experiment with risky or dumb concepts because they’re among intimates."

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