Contrastivism

Contrastivism, or The contrast Theory of meaning, is an epistemological Theory proposed by Jonathan Schaffer that suggests that knowledge attributions have a ternary structure of the form 'S knows that p rather than q'. This is in contrast to the traditional view whereby knowledge attributions have a binary structure of the form 'S knows that p'. Contrastivism was suggested as an alternative to contextualism. Both are semantic Theories that try to explain skepticism using semantic methods.