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    An argument that never posits definite pre-measurement va... — Carmelics
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    Challenges→The Gleason-type argument tacitly assumes noncontextuality.

    An argument that never posits definite pre-measurement values for observables cannot be said to assume noncontextuality, since noncontextuality is a constraint on such pre-existing values.

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    Key Terms

    Observable(in quantum mechanics and physics)
    A property or measurement of something that can actually be detected or measured, like the position or spin of a particle.
    Pre-measurement values(as used in quantum physics philosophy)
    The idea that particles have definite properties (like a specific location or speed) *before* we measure them, rather than only having definite properties once we look at them.
    argument(Epistemology and argumentation theory; the 'evidentiary' conception of argument)
    An evidentiary construct consisting of (1) premises, (2) a conclusion, and (3) an inference from the premises to the conclusion, implying that the conclusion is true, likely true, plausible, or should otherwise be accepted.
    constraint(canonical formulations of general relativity and electromagnetism)
    A condition encoding the fact that canonical variables cannot be specified independently of one another.

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    noncontextuality(Bell 1964, reprinted 1987c: 9)
    The assumption that measurement of an observable must yield the same value independently of what other measurements may be made simultaneously.
    posits(Reichenbach's later view on induction)
    Claims made without guarantee of truth, used by Reichenbach as a basis for inductive inference when no stronger justification is available

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    The Gleason-type argument tacitly assumes noncontextuality.

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