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Theorist in behavioral economics, known for his collaborations with Daniel Kahneman, Amos Tversky, and others. Elected as a member in the National Academy of Sciences.
Internet besserwisser.
Co-founder of @RoamResearch. Believer in tools for thought.
Nonfiction author and associate professor of computer science at Georgetown University
Wonder, blunder, salve, solve!
Working on tools that expand what people can think and do.
Past: led R&D @KhanAcademy; helped build iOS @Apple.