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Thanks, Ben, for a very interesting interview. Cass' argument reminds me of James Surowiecki's "The Wisdom of Crowds." In this book, Surowiecki argues that group decisions can be more "intelligent" in some cases contrary to the popular notion of "mob mentality" or "group think."
Central to Surowiecki's argument, however, is that the right conditions must occur for crowd wisdom to be effective. This environment is basically an environment that encourages and respects different ideas and also has a method for aggregating knowledge.
Hmm. Kind of sounds like the ideas behind Democracy, doesn't it?