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Economist at George Mason University, co-author of Marginal Revolution, host of Conversations with Tyler. Writes in short, dense claims about economics, culture and AI, and has moved position on AI in public more than once.

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  Intelligence and Polanyi knowledge are mostly complements with fairly limited substitutability in producing output.

  Their words

  In the model, intelligence and Polanyi knowledge combine to produce output. Substitutability is fairly limited. For instance, if you have problems of norms in your office, a mere dose of AI-drenched technocratic knowledge does not usually solve those problems. Sometimes it even can make those problems worse, by empowering rent-seekers further. Intelligence and Polanyi knowledge are not quite Leontief complements, but they are mostly complements.

  A simple model of AI-aided economic growthmarginalrevolution.com

Professor of psychology at the University of Toronto and Brooks and Suzanne Ragen Professor Emeritus at Yale. Author of Against Empathy, The Sweet Spot and Psych, and writer of the Small Potatoes newsletter.

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  Social media may really be harming teenagers even though the studies find almost nothing, because everyone is exposed and the studies compare harmed children with harmed children.

  Their words

  I think it’s entirely plausible that screens have a real negative effect on teenagers, but studies can’t find them because (a) the effects need not be dose-dependent (maybe two hours on your phone isn’t worse than one hour), and (b) given that everyone else is on social media, giving it up can have a negative effect.

  Kids These Dayssmallpotatoes.paulbloom.net

Neurologist at Oxford; studies apathy, motivation and attention after brain injury, and edits the journal Brain.

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  A stimulant taken to sharpen an already-high performer is more likely to make them worse, because the dose-response curve is an inverted U.

  Their words

  If you start from a low baseline of performance, you might get some positive boost. It's quite small, but you might get it. But if you are actually quite a high performer, then you risk getting worse. with this is called the inverse U-shaped curve.

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Founder and CEO of Valar Atomics, a nuclear-reactor company founded in 2023.

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  America stopped building reactors because Three Mile Island was mismanaged as a public-relations event, not because anyone was harmed by it.

  America

  Their words

  Now, nobody died, right? Uh in fact, not only did nobody die, nobody was injured and there was no radiation dose to the public. But, uh it was sort of a optics and PR situation um that was mismanaged in many many different ways and the public uh became fearful and and lost interest in nuclear.

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Entrepreneur and founder of Blueprint. Publishes a detailed, freely available longevity protocol documenting the food, supplements, devices and measurements he uses on himself.

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  Six hours of exercise a week, split between strength, cardio, flexibility and balance, is the right dose for a healthy adult.

  Their words

  Exercise – 6 hours a week is ideal.

  Bryan's Protocolprotocol.bryanjohnson.com

Astrophysicist and coffee researcher; author of The Physics of Filter Coffee and The Physics of Espresso, and writer of the Coffee ad Astra blog on brewing science and equipment.

• Usestheir ownrcmnd.app

  Pulsar Mini

  Their words

  In other words, I still use exactly the same recipe that I developed for the Pulsar when I brew with the mini, I just brew with a dose smaller by a factor 0.6 (e.g., 15 grams instead of 25).

  coffeeadastra.com

Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

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  Dominic Cummings Substack

  Their words

  I find a dose of these perspectives highly valuable.

  thezvi.substack.com