If one resolves the measurement problem by postulating additional variables beside the wave function, it is the dynamics of these variables which man… - Tim Maudlin

Non-locality appears at exactly the point where the "measurement problem" which infects standard quantum theory is resolved.

[N]o consensus... exists among physicists about how to understand quantum theory. There... is no precise, exact physical theory... Instead there is raging controversy. ...How can the manifest and overwhelming success ...be reconciled with complete uncertainty about what the theory claims about the nature of matter?

[T]he science of thermodynamics... initially aimed at providing a precise account of how heat spreads through an object and from one object to another. But we can discover... detailed equations governing heat flow and still not have an account of what heat is. ...It is a characteristic of contemporary physics education that much more time is spent learning how to solve the equation and get a practical answer... than in... the nature of heat, or the nature of space and time, or the nature of matter. Physics students... fascinated by these foundational questions can find themselves frustrated by... classes that refuse to address them. This volume is dedicated to them as much as it is to philosophers...