Boghossian (Philos Perspect 8:33–50, 1994) argued (a) that externalism is incompatible with a transparency thesis according to which we can know priori whether any two of our occurrent thoughts have the same or distinct content, and (b) this integral commonsense conception rationality, requires apriority logical abilities. Stalnaker (Our knowledge internal world, Oxford University Press, Oxford...

Medieval analyses of molecular propositions include many non-truthfunctional connectives in addition to the standard modern binary connectives (conjunction, disjunction, and conditional). Two types of non-truthfunctional molecular propositions considered by a number of 13thand 14th-century authors are temporal and local propositions, which combine atomic propositions with ‘while’ and ‘where’. D...