What the EPR paradox challenged — Einstein argued entanglement implied either hidden variables or nonlocality

What the Aspect experiments confirmed — Bell inequality violations prove quantum nonlocality is real

Aspect experiments demonstrated quantum entanglement's nonlocality, violating Bell's inequalities

What Bell's theorem proved — no local hidden variable theory can reproduce all predictions of quantum mechanics

Bell's theorem disproved local hidden variable theories' ability to match quantum mechanics' predictions

What the information paradox asks — does information falling into a black hole disappear, violating quantum mechanics

The information paradox questions: Does information vanish in black holes, contradicting quantum theory?

What does the Kochen-Specker theorem demonstrate regarding the nature of quantum observables and hidden variables theory?

Kochen-Specker theorem disproves non-contextual hidden variables in quantum mechanics

What the measurement problem asks — why does a quantum superposition collapse to a definite state upon observation

Quantum measurement problem: Superposition collapses due to observer interaction

What quantum entanglement swapping does — entangles particles that have never directly interacted

Quantum entanglement swapping enables non-interacting particles to become entangled through a third-party interaction