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    Fixed-point constructions exist in many formal systems; t... — Carmelics
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    Challenges→Fixed-point constructions formally validate the co-provability of K(k) and ¬K(k) as a structural feature of the semantic model, not a mere paradox.

    Fixed-point constructions exist in many formal systems; their mere existence doesn't vindicate semantic claims about knowledge without independent justification.

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    Key Terms

    knowledge(Distinguished from mere true belief, which may be the product of indoctrination and need not exercise deliberative capacities.)
    Justified true belief — true belief that has been arrived at through the exercise of deliberative capacities, including comparison of and deliberation among alternatives.

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