• Is ChatGPT correct about this formalization of the Liar Paradox inProlog?

    From olcott@polcott2@gmail.com to comp.lang.prolog on Sat May 13 10:03:14 2023
    From Newsgroup: comp.lang.prolog

    Please explain this in English:

    ?- LP = not(true(LP)).
    LP = not(true(LP)).

    ?- unify_with_occurs_check(LP, not(true(LP))).
    false.

    ChatGPT
    The first statement in Prolog is an assignment where LP is defined as
    the negation of the truth value of LP itself. This means that LP is the
    logical negation of LP, indicating that LP is false if it is true, and
    true if it is false.

    The second statement is a query that checks if there exists a
    unification between LP and not(true(LP)). It attempts to find a
    consistent value for LP that satisfies the equation.

    In this case, the result of the query is false, indicating that there is
    no valid unification between LP and not(true(LP)). In other words, there
    is no consistent value that can simultaneously satisfy the equation LP = not(true(LP)). This suggests that there is a contradiction in the logic,
    as the equation cannot hold true for any value of LP.
    --
    Copyright 2023 Olcott "Talent hits a target no one else can hit; Genius
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