For a decade, the question of what animates superconductivity in magic-angle graphene has been one of quantum physics' most contested puzzles — a dispute between those who trusted the hum of atomic vibrations and those who pointed to the charged restlessness of electrons themselves. Researchers at the University of Manchester have now resolved that debate by doing something elegantly simple: they turned the superconductivity off. By placing a tunable screening layer at sub-nanometer proximity to magic-angle graphene and suppressing electron-electron interactions, the team demonstrated that tho