Get a special 35% discount* on an annual digital subscription to The Economist at https://www.economist.com/Sabine *20% in the UK, Latin America, and India. A group of physicists claim they have proof that true randomness exists. This has implications for encryption protocols and computing, but (if true) would also indicate that the past does not determine the present. But are their findings actually legitimate? Let’s find out. Paper: https://www.nature.com/articles/s41586-025-09054-3 🤓 Check