I wrote Since he devised what many people now accept as an example of a belief that's true and is justified, quite a few philosophers—and for all I know, many blacksmiths—have worked hard to refute it should read Since he devised what many people now accept as an example of a belief that's true and is justified, *yet isn't knowledge* quite a few philosophers—and for all I know, many blacksmiths—have worked hard to refute it RP