According to EC, ‘know’ is a context-sensitive term. Among proponents of EC, however, there has been relatively little discussion, and little agreement, about what linguistic model best captures this fact. Thus, Cohen (1988, 97) speaks of ‘knowledge’ as “an indexical”,[19] Hambourger (1987, 262) likens it to ‘large’, Heller (1999a, 206; 1999b, 121) says that it is a vague term, and DeRose, while at one point (1992, 920–921) using an analogy with the demonstrative ‘this’, tends to be noncommittal as to the appropriate model for ‘know’.