 It has (very aptly) been remarked that Feigl’s “semantic realism is an anti-reductive position” (Psillos 1999, p. 12). It is anti-reductive insofar as the theoretical language of science is claimed to be autonomous in relation to the observational evidence base. Consequently, the mind-independence of the ‘factual referents’ of theoretical terms seems to be secured by the very reference relation itself: the existence of theoretical entities like atoms is obviously implied by the independent reference of theoretical terms like ‘atom.’