Maudlin's analysis in 'Quantum Non-Locality and Relativity' establishes that superluminal signaling requires a controllable cause, and λ-independence violations merely redescribe pre-existing correlations rather than generating new causal pathways.
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Violations (of λ-independence)(What experiments seem to show in quantum mechanics)
Situations where the assumption of independence breaks down, meaning hidden variables or predetermined factors might be at play after all.
superluminal signaling(Discussed as a theoretical consequence of λ-distribution in certain deterministic hidden variable theories)
The transmission of information or causal influence at speeds exceeding light, made possible if distant outcome statistics depend on a nearby controllable factor
λ-independence (lambda-independence)(as the concept being violated)
The idea that what we observe in an experiment shouldn't depend on hidden information or variables that existed before we started measuring; essentially, it means that hidden details shouldn't influence what we can actually detect.