I was wondering, if you were to announce a project like that, whether you'd get some pranksters walking obviously non-sensical routes daily, or funny/offensive shapes, just to mess with it. Humans are trickier to work with than particles. My hunch would be: on the first such projects, maybe, but if that became a new normal it would probably mostly die out over time. I would love if we designed more spaces that way.

Pretty good way to design software, too. See what users do, then make that thing or make it better.

Of course, this is isn't perfect -- the user doesn't always know what they want.