Are Superdeterminism and Many Worlds compatible quantum interpretations? Pretty much as my title says... are Superdeterminism and Many Worlds compatible quantum interpretations? It seems to me that they might be compatible, or close to it, maybe even the stronger statement that they are essentially equivalent? But I feel like I am missing some important differences between the two.
 A: Superdeterminism is the idea that measuring devices and the systems they measure are somehow correlated in advance of the measurement. Advocates of this theory say it would account for the results of EPR type experiments and that this theory could be local. I have explained some problems with this idea in another answer.
The many worlds interpretation (MWI) doesn't require superdeterminism and isn't equivalent to it. The MWI just claims that quantum mechanics is an accurate description of how the world works and that it implies the existence of a structure called the multiverse that looks like a collection of parallel universes in some approximations. The MWI is local since quantum systems are described in terms of local equations of motion so that changes in quantum observables propagate at or below the speed of light. This doesn't require that measuring instruments are correlated with the systems being measured in advance. For more on the explanation for EPR type correlations see this answer.
