 Some of the sociological work had a postmodern cast, and so did contributions by some philosophers. For example, Richard Rorty’s version of historicist pragmatism rejected correspondence theories of truth and the related idea that we humans have some naturalized-theological obligation faithfully to represent metaphysical nature with our science. He spoke suggestively but vaguely of major transformations in the sciences (or anywhere else in culture), such as that achieved by Galileo, as the invention of a new “vocabulary” that worked well enough for certain purposes to catch on, but not as new truths established by logical reasoning. As for rationality itself, it is a matter of maintaining an honest, civil “conversation”: