"The principle of locality states that no instantaneous transmission of physical influences between spatially separated physical systems ("action at a distance") is allowed, or... that physical systems can only be physically influenced by their immediate environment. ...[The] broader principle states that any possible definitive determinations concerning any given system—its physical state; the application of technology (such as a measurement, which, rather than a prediction, definitely determines a physical state of a quantum system); the falsifiability of claims concerning quantum systems, and so forth—is local."