There's a thing Henson did here that nobody talks about because the piece itself discouraged talking about it.
A man walks into a white cube, rational and testing the walls until they start moving. Not violently, but incrementally — and he stops fighting, not from dramatic surrender but because the compression is so gradual that fighting it requires continuous vigilance, and humans can't sustain vigilance against something that doesn't announce itself.
The mechanism is invisible. There's no lever, no visible operator, no explanation. And this matters, because if he could see the mechanism, he could theorize about it, blame it, direct his energy outward, but instead the trap is just the room itself, and the architecture is the captor.
Henson made this in 1969, a year before the moon landing, when optimism about technology was at its clean, frictionless peak. He created a perfect system of confinement that required no violence, no warden, no resistance. Because there's nothing to resist, just geometry that's slowly rewriting the space of what's possible. The man eventually sits and accepts the shrinking room the way we accept the terms of service we don't read, the incremental surveillance we don't notice, the slow reduction of options that feels like choice because we're the ones choosing within it.
The trap only works if you've internalized the architecture so completely that resistance becomes unthinkable.
Once the walls become ambient, once compression is the default state people are born into, nobody will remember what open space felt like. And at that point, the distinction between captivity and normalcy breaks entirely, the Cube stops being a warning and becomes a model, a proof of concept of what bureaucracy and algorithms and infrastructure become when nobody's maintaining it as a choice anymore.