• Zink@programming.dev
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      7 hours ago

      This was a fun one to look up. https://en.wikipedia.org/wiki/Shannon_number

      It looks like the number of valid chess positions is in the neighborhood of 10^40 to 10^44, and the number of atoms in the Earth is around 10^50. Yeah the latter is bigger, but the former is still absolutely huge.

      Let’s assume we have a magically amazing diamond-based solid state storage system that can represent the state of a chess square by storing it in a single carbon atom. The entire board is stored in a lattice of just 64 atoms. To estimate, let’s say the total number of carbon atoms to store everything is 10^42.

      Using Avogadro’s number, we know that 6.022x10^23 atoms of carbon will weigh about 12 grams. For round numbers again, let’s say it’s just 10^24 atoms gives you 10 grams.

      That gives 10^42 / 10^24 = 10^18 quantities of 10 grams. So 10^19 grams or 10^16 kg. That is like the mass of 100 Mount Everests just in the storage medium that can store multiple bits per atom! That SSD would be the size of a small large moon!

      • lime!@feddit.nu
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        2 hours ago

        i think you did the weight approximation in the wrong order, 1024 is a lot bigger than 6×1023. so you can probably double the final weight.

      • PolarKraken@programming.dev
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        4 hours ago

        valid chess positions is in the neighborhood of 1040 to 1044

        Lol, big board you’re playing with…

      • CrazyLikeGollum@lemmy.world
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        5 hours ago

        Assuming your math is correct (and I have no reason to doubt that it is) a mass of 10^16 kg would actually be a pretty small moon or moderately sized asteroid. That’s actually roughly the mass of Mars’ moon Phobos (which is the 75th largest planetary moon in the Solar System).