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they have more space to pass "through" each other. you can sort of visualize it by taking color to be a fourth dimension. you can move stuff in that dimension by changing its color and that lets you pass parts of cables "through" each other
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yea i get that, just as being able to move things through the 3rd dimension allows you to tidy up 2d messes by picking up objects "out" of the field and reinserting them elsewhere – but it also introduces a whole new kind of potential mess, no? in that same sense?
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like, a knot is a 3d phenomenon, right – you can't have a 2d knot. I imagine you could resolve a 3d knot by going through the 4th dimension, but what about 4d knots?
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so i'm saying things very tersely but the "passing through" move i've been describing basically proves that 1d shapes can't be tangled / knotted in 4d; basically in 4d you can undo all of the crossings that appear in a tangle / knot diagram this is cool and not obvious!
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yea I get that re: 4d lets you untangle lower dimensional things in "magical" ways and to continue with the cultural walls metaphor: having an extra degree of freedom also introduces you to new problems that nobody else is capable of seeing or even comprehending
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