‘Purism’, the claim that I is a pure indexical, is a contradictory position which requires the truth of three doctrines that have been shown to be myths: ‘rule theory’, ‘independence’, and ‘the guarantee’. A rash craving for simplicity explains its almost-universal support. ‘Purism’ is false for reasons that create a presumption in favour of a sharply diverging conception: that I is a deictic term. Thus, it is now necessary to establish what a ‘deictic term’ is, and whether I counts as one.
Keywords: purism, rule theory, independence, the guarantee, pure indexical, deictic term, simplicity