ABSTRACT
This chapter solves the problem that Professor Gettier has raised. There are a number of ways in which a person who has evidence for what he believes may nevertheless fail to be completely justified in believing what he does. A person may, for example, fail to be completely justified simply because the evidence that he has is not adequate to completely justify his belief. Moreover, if a person has evidence adequate to completely justify his belief, he may still fail to be completely justified in believing what he does because his belief is not based on that evidence. For example, a detective who rejects the truthful testimony of a reliable eye-witness to a crime, but accepts the lying testimony of an ignorant meddler, when both tell him that Brentano committed the crime, would fail to be completely justified in believing this.
