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3 min read Richard Feynman's Letter on What Problems to Solve Daniel Scrivner Daniel Scrivner Sharing what I learn building startups (Square, Digit, Tiny, now ClassDojo) and investing in them. X Jul 19, 2025 • History's Greatest • Letters & Notes • Richard Feynman
2 min read Best Books to Harness Your Creativity Daniel Scrivner Daniel Scrivner Sharing what I learn building startups (Square, Digit, Tiny, now ClassDojo) and investing in them. X Jul 19, 2025 • Best Books • Creativity • Richard Feynman
