  Tests of Bell's theorem rule out local hidden variables theories. But any
theorem is only as good as the assumptions that go into it, and one of these
assumptions is that the experimenter can freely chose the detector settings.
Without this assumption, one enters the realm of superdeterministic hidden
variables theories and can no longer use Bell's theorem as a criterion. One can
like or not like such superdeterministic hidden variables theories and their
inevitable nonlocality, the real question is how one can test them. Here, we
propose a possible experiment that could reveal superdeterminism.
