closed loop systems, space container, life support, circular systems

The space container thought experiment: systems thinking for survival

You wake up. It’s dark. Somewhere a fan is humming. Your eyes adjust. You’re in a container. Metal walls, a few small windows, and through them: stars. Just stars. No Earth anywhere. There’s a note taped to the wall: “You have everything you need to survive. Nothing goes in, nothing goes out. Good luck.” I bring this thought experiment up when I’m in the right mood with friends. It sounds like science fiction. What it actually does is strip away the thing most of us never question: the assumption that there is an “outside” that absorbs our mistakes and refills our supplies. ...

January 20, 2026 · 9 min read · Tom Meurs