But, according to the empiricist philosophers I have just mentioned, remembering also involves images. In fact a memory is one sort of image. But memory is sometimes mistaken, as we have seen. This is not general memory scepticism. I cannot use my memory to justify my memories.
Justification consists in appealing to something independent.
One attempted escape is to say that I would achieve at least some justification if my memories are consistent with one another and with my current perceptions. This was the route preferred by A.J.Ayer. It is no good. As far as consistency of memories go that is no more effective than watching a video of the news to check whether what it said was true the first time. If this is a memory, and not just an imagining, the bus timetable will say 2.30 p.m. if I look at it now.