Simulating all of Massachusetts at 1:1 scale inside an O'Neill cylinder

AndyMasley · x · 2026-11-10

AndyMasley teases a wild demo (screenshot shows a Claude Artifacts interface): the entire state of Massachusetts wrapped at one-to-one scale around the inside of an O'Neill cylinder thirty kilometres in radius—"Massachusetts, inside out."

The premise: drive in any direction and what you see in the sky is where you'll arrive; look up from Boston and New Bedford is overhead. It includes driving/flying, jetpack, map teleporting, time-of-day controls, with artifacts private by default—a classic counterintuitive AI-built showpiece.

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