 By itself, the view that experiences are raw feels is silent about whether experiences are able to justify beliefs about the external world. To get to conclusions about epistemology, some sort of linking principle is needed. Davidson’s idea is that a source can supply justification only if it has propositional content, so that the source is assessable as accurate or inaccurate, depending on whether the relevant proposition is true. On this way of setting up the issues, an experience has “propositional content” by having content that is assessable for truth (for further elaboration of the idea that experiences have propositional content, see the entry on  the contents of perception).  Given Davidson’s demand, experiences would be unable to justify beliefs if they were merely raw feels or sensations. (For important precedents to Davidson here, see Sellars 1956 and Popper 1959: chapter 5. For further contemporary discussion, see Bonjour 1985; McDowell 1994; Brewer 1999; and Pryor 2005.).