Superdeterminism
Superdeterminism is a proposed interpretation of quantum mechanics that attempts to resolve the apparent incompatibility between quantum theory and local realism—the principle that objects possess definite properties independent of measurement and that no influence travels faster than light. Unlike other interpretations that accept either the abandonment of realism or locality, superdeterminism proposes a different solution: denying the freedom of experimenters to independently choose their measurement settings. According to this view, all events in the universe, including the decisions made by physicists to orient their detectors in particular ways, are predetermined by the initial conditions of the cosmos.
The Predetermined Correlation Problem
In standard quantum mechanics, Bell’s theorem and subsequent experiments suggest that no local realistic theory can reproduce quantum predictions. Superdeterminism circumvents this conclusion by arguing that the apparent randomness in experimental outcomes is illusory. The correlations between a particle’s properties and the measurement apparatus are not nonlocal or mysterious, but rather natural consequences of a deterministic universe where experimenters’ choices and particle states share a common causal origin stretching back to the Big Bang. This eliminates the need to invoke quantum nonlocality or accept that reality is fundamentally indeterminate.
Status and Criticism
Superdeterminism remains a minority position among physicists, primarily because it requires abandoning the intuitive notion of experimental free choice and raises epistemological questions about whether science itself remains meaningful if all observations are predetermined. Proponents argue it offers a genuinely local and realistic interpretation of quantum phenomena, while critics contend it is unfalsifiable and makes physics untestable in principle. The proposal continues to be discussed in theoretical physics, though mainstream quantum mechanics relies on interpretations that do not invoke complete determinism.