Electra paradox

noun

1. See de dicto
   logic the supposed paradox that one may know something to be true of an object under one description but not another, as when Electra knew that Orestes was her brother but not that the man before her was her brother although he was Orestes. This shows the predicate "knows" to be intensional, that Electra's knowledge here is de dicto, and that the statement of it yields an opaque context See also de dicto