 Questions about compatibility have been extended to more than just knowledge of content. There is also a case to be made that EXT precludes armchair knowledge of one’s attitudes toward those contents (Bernecker 1996, Gibbons 2001). Thus, even if it is known that you are currently thinking that water is scrumptious, EXT may preclude armchair knowledge that you believe this. For what counts as “belief” might vary according to one’s linguistic community. In addition, new issues have arisen in light of externalism about qualia (as held by Lycan 1987; 1996; 2001, Dretske 1995, Tye 1995). Briefly, if a quale is partly individuated by the subject’s environment, then it seems one could not know that one had a quale of fire engine red unless one antecedently knew the actual color of fire engines. But since the latter is not knowable from the armchair, then it seems neither is the former (Levine 2003, Ellis 2007).