  Argument F shows that either content-externalism, representationalism, or qualia-internalism should be rejected. For a discussion of this problem, see Egan and John 2003 (Other Internet Resources); Dretske (1995, Ch. 5) argues against P3 (see also Tye 1995, 150–5; 2002, Ch. 6; Lycan 1996, 115–7; and Noë 2005, Ch. 7); P1 is denied in Chalmers 2004.