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We’re trying to answer that question in another, larger piece. Quick preview of theory: requires inventors who are able to do both original design work and also original cognitive science. Existing institutions and incentive systems make such teams unlikely.
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Lots of thought about this inside higher ed — in some ways we think about little else than alternatives to books and lecture halls. The small intense seminar still works best and is most expensive.
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Very familiar -- I believe they're only up to a few hundred people and I'm not sure things are scalable beyond that... The constraint is excellent seminar leaders.
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