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I'm reminded of the occasional notion in cosmology that many mysteries of existence go away if you regard spatial dimensions as emergent phenomenon arising from deeper quantum "degrees of freedom". It makes me think of ancient assumptions - atomos, Arunic kana - that there is a thing - a space, a volume - too small to cut into. But doesn't that seem a little contrived? How can something be too small to divide? I'd propose they're coming at it from the wrong way. It's not the space, it's the fact that it can't be cut any more. The system's freedom of action restricted to a single vector - the future can be constrained no further - and subsequent knife cuts do nothing. The sum of these qualities in maco systems thus, in our minds, resolve into width, depth, length.
Similarly, stack up the CFD stuff fine enough and dense enough, and you get FEA emerging. Now, I'm . . ok, keep in mind I am a layman in absolutely everything . . but it seems like a not-horrible metaphor.
