I'm slowly working my way through what I need to really understand the Bell papers. Everyone says that a good start is the EPR paper. I understand that Einstein may not have read the final version before publication and may not even have wanted his name appended (sort of convoluted logic and clumsy wording, and Einstein was actually really good at this stuff!!) There is a statement direct quote: . If, without in any way disturbing a system, we can predict with certainty (i.e., with probability equal to unity) the value of a physical quantity, then there exists an element of physical reality corresponding to this physical quantity. .Somehow, to me this doesn't seem to hold water. Maybe someone can clarify it. How can I predict the state of a system, much less without disturbing it? If I'm driving a car at 60 miles an hour, I can look at the speedometer and know I am going that speed, but even there, there is no prediction. The world doesn't seem to have dials and meters attached to it in any reasonable way, so, what the heck is meant by this statement? I know they use this definition later in the two particle wave function argument, but that seems to be using what they considered a result to really come up with the definition. Fairly circularly transparent, it seems to me. Am I missing something?