Wrong, David B., ... abstracts should come in 23 dimensions, to jive with heterotic superstring theory. (^__^)
As for buyers, ... we should make it clear that we follow the standards of art judges, which, as I said (in my experience), is height FiRST, width SECOND, depth THIRD.
This logically accords with the natural scheme of things, when you think about the human concept of spatial dimensionality, especially in regard to how gravitational pull creates the forces that shape our lives.
VERTICAL is the most severe dimension to negotiate (think stair climbing, jumping straight up, walking hills), ... HORIZONTAL is less severe (think walking a level path). After negotiating verticality, the next thing we ascertain is field of view (anatomy of human eyesight), which is the basis of the WIDTH dimension. Finally, DEPTH is the most obscure dimension (think climbing big rocks and looking down to misjudge how high up you are), so depth logically should be the last listed dimension.
To review:
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VERTICAL - most severe to overcome in human movement = HEIGHT = first listed dimension
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FIELD OF VIEW - shaping constraint of human visual perception = WIDTH = second listed dimension
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DEPTH - hardest to perceive = DEPTH = third listed dimension
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H x W x D