A wonderful little fact about the maximum power density inside the sun (spoiler: about the same as inside a compost pile!) ht @nattyoverhttps://twitter.com/chris_w_walter/status/1223021681918132224 …
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I think it's a bit similar to the reason semiconductor chips are mostly 2d: heat and the ability to dissipate heat both scale with area. If they were 3d, the heat produced would scale with volume, but the dissipation would scale with area, and they'd melt.
Brains (& bodies, more generally) seem really interesting for this reason. We're amazingly power efficient.
Thanks -- and apologies for being too lazy to think about it for myself!
My explanation isn't so crisp; I'm actually a little dissatisfied! I may try to find a better expression later, but for now I need to stop procrastinating on twitter & work!
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