Philosophy Lexicon of Arguments

Morning Star/Evening Star: Example for intensions from Frege's Über Sinn und Bedeutung (1982). The extension would be the planet Venus. Intensions may cause difficulties in relation to so called opaque contexts. E.g. a whitness maintains that she has seen the morning star. She may then not be quoted as having seen the evening star - while both are identical to the Venus. See also opacity, identity, intensions.
Author Item    More concepts for author
Block, Ned Morning Star/Evening Star   Block, Ned
Danto, Arthur C. Morning Star/Evening Star   Danto, Arthur C.
Millikan, Ruth Morning Star/Evening Star   Millikan, Ruth

Ed. Martin Schulz, access date 2017-05-25