Local Hidden Variables

Local hidden variables are hypothetical factors that could, in theory, determine the outcomes of quantum experiments in a predictable way, respecting the principle that information cannot travel faster than light. They suggest that particles have predefined properties influencing measurement results, and these properties are "local," meaning they only affect nearby particles without any spooky action at a distance. The idea was proposed to explain quantum randomness with underlying certainty, but experiments have shown that such local hidden variables cannot fully explain quantum phenomena, supporting the idea that nature may be inherently probabilistic and non-local.