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Cake day: June 13th, 2023

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  • I’m sure the thinking is that art appearing in both Europe and Indonesia suggests that they both inherited it from their common ancestors in Africa.

    But when the earliest art was thought to have been European, the idea that art first appeared in Europe and spread from there via cultural diffusion was considered a reasonable hypothesis. Now that earlier art has been found outside Europe, the flip scenario—that art spread from Indonesia to Europe via cultural diffusion instead of shared ancestry—isn’t even mentioned.



















  • It doesn’t make sense that we couldn’t see it and the particles that could explain it seemed like they were invented just to justify dark matter

    It always seemed like a natural assumption to me: the particles we know about were discovered because they interact with each other via at least one other force in addition to gravity. But there’s no other force common to all particles, so why not expect particles that only interact via gravity? They’d naturally be hard to detect, since gravity is so much weaker than the other forces.

    Assuming that the only particles that exist are the ones that happen to be easy for us to detect feels like observer bias.