True story 1:26

The Answers Weren’t Written Down

Bell’s theorem with answer cards: any card carried from the source scores plus or minus 2, so no mix of cards beats 2; quantum mechanics predicts 2√2 ≈ 2.83, and experiments from 1972 to the loophole-free tests of 2015 agree. Convention: a photon pair in Φ+, E(a,b) = cos 2(a−b). It rules out local answer cards only, and nothing here sends a signal. Ends on John Stewart Bell (1928 to 1990).

True story Every fact on screen was checked before release (2026-10-26). The dialogue is invented.

Sources

• J. S. Bell, Physics 1, 195 (1964)
• Aspect, Grangier, Roger, PRL 49, 91 (1982)
• Hensen et al., Nature 526, 682 (2015), Delft
• Giustina et al., PRL 115, 250401 (2015), Vienna
• Nobel Prize in Physics 2022, press release
• Photo: John Stewart Bell at CERN, June 1982 (CERN, CC BY 4.0; cropped and toned)
• Licence: CC BY 4.0