A decade after beginning the project, Ryan McGee, Olivia Kosterlitz, Artem Kaznatcheev, Ben Kerr, and I have a paper in PNAS this week that is one of the best pieces of work I've ever been involved in. Without paywall: carlbergstrom.com/publications... Below, a thread about (part of) the paper.

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That, in a nutshell, is the empirical part of the paper. The theoretical part of the paper is probably even more exciting. There, we turn to computational learning theory and show that a quantity known as *regret* is the appropriate measure for the cost of selection.

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Your body began as a single cell and now is an exceptionally complex machine of thirty trillion cells that function together exquisitely to maintain homeostasis and respond to complex and ever-changing environments. How does it know how do that?

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what were the odds of that happening 🤪🤪

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thanks for flying Schadenfreude Airlines, have a great day

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