 Reply (i) has not been much pursued. (ii) has, a bit, by Tye (1994) and especially Rey (1998). Rey argues vigorously that “qualia” are narrow, and then offers a narrow representational theory. (But as previously mentioned, it turns out that Rey’s theory is not a theory of sensory qualities; see Section 4.5.) Note that Fregean as opposed to Russellian representationalism is well suited to (ii); even if the Russellian contents shift, the Fregean contents need not. Chalmers (2004) advocates such a view. (Papineau (2014) offers a fourth alternative: to say that although sensory states do represent worldly properties such as color and shape, the sensory qualities themselves are simply not representata and do not shift when the environment is inverted; rather, they are just narrow properties of subjects. He tries to explain away our feeling that sensory qualities are presented to the mind as worldly.) 