What’s up and What’s down

We think a lot about the vertical surfaces (walls) in the spaces where we find ourselves, but not so much about the horizontal ones, the ceilings and floors. Science is clear about how they should be managed, however. The darkest surface in any room should be underfoot and the lightest overhead, with the walls occupying literally and figuratively, a middle ground—at least if you want people to feel comfortable.  If you want to be on-edge for some reason, go ahead…

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