Belief Fragments and Mental Files

Belief fragments and mental files are based on the same idea: that information in people’s minds is compartmentalized rather than lumped all together. Philosophers mostly use the two notions differently, though the exact relationship between fragments and files has yet to be examined in detail. This chapter has three main goals. The first is to argue that fragments and files, properly understood, play distinct yet complementary explanatory roles; the second is to defend a model of belief that includes them both; and the third is to raise and address a shared dilemma that confronts them: that they threaten to be either explanatorily lightweight or empirically refuted. This chapter contends that it is better to embrace the horn of this dilemma that opens up files and fragments to empirical refutation or confirmation, by adopting a psychofunctionalist approach.