 A standard objection to so identifying experiences with the acquisition of beliefs is that one may not believe that things are the way they appear. (This objection is discussed by Pitcher, op cit, and by Armstrong 1968). For instance, if you have background knowledge that despite appearances there is no red shiny fish in front of you, then you will not believe that there is one. To accommodate this objection, the relation between experiences and the acquisition of beliefs must be something other than identity.