Found myself wondering what kind of data structure you'd need for representing fine geometry on the scale of a world-sized "metaverse." Naively, assuming you want micrometer scale… 1° ~ 1e5m => precision to 1e-11°; i.e. lat/long must distinguish ~1e13 values. A double suffices!
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(Of course, in practice, I'd guess geometry positions would be represented at runtime with cartesian coordinates relative to some local "sector" reference frame, so you could probably just use a float)
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Oh, boy, this looks really great.