  Perry argued against the Fregean claim that there is a single entity — sense — that answers to the three principles of sense individuation presented in section 1. He argued that this identification leads to several problems when applied to indexicals. Perry's position is that one entity answers to Accept and a distinct entity answers to Truth and Attitude. More generally, Perry argued that an adequate account of indexicals and demonstratives in thought and language requires that we have one entity serving as cognitive values and a distinct entity serving as the contents of thoughts and sentences and bearers of truth value. The mistake of the Fregean is to think that there is a single item that can do all of the work.