Isn’t that purely geometrical notion? A “real” 2d object is also imperceptible to a 3d creature, because a flat plane doesn’t reflect anything; only particles do which happen to be ~somewhat in a single plane. The plane itself is abstract and doesn’t truly live in a 3d world.
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A third dimension being is unfathomable to a 2D being. And so on
Isn’t that purely geometrical notion? A “real” 2d object is also imperceptible to a 3d creature, because a flat plane doesn’t reflect anything; only particles do which happen to be ~somewhat in a single plane. The plane itself is abstract and doesn’t truly live in a 3d world.