 The main challenges for Fregean views (of utterance content, belief content, and experience content) is to make precise in each case what modes of presentation are such that they can reflect these variations. (For criticisms of Fregean views about the contents of both beliefs and experiences, see Thau 2002, ch. 2. For defense of the Fregean view drawing on epistemological considerations, see Silins 2011). 