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British Dictionary definitions for opaque context

opaque context

noun
  1. philosophy logic an expression in which the replacement of a term by another with the same reference may change the truth-value of the whole. John believes that Cicero was a Roman is opaque, since even though Cicero and Tully are the same person John may know that the given statement is true but not that Tully was a RomanCompare transparent context See also intensional, Electra paradox
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