a fallibilist intuition pump.
A firing squad comprising 20 riflemen takes aim at a
convicted criminal sentenced to death.
Of the twenty, 19 have loaded their guns with a live
round, while one of them has loaded his gun with a blank. Each sharpshooter is aware of this
fact, but none are told whether he’s the one with the blank. On command, the
firing squad unloads a volley of 19 bullets, all of which hit the condemned
man. Each shooter believes that
he’s shot the man—after all, there’s a 95% chance that he has. Thus, we have a scenario in which 20
persons rightly believe that he’s shot a man. 19 have a true belief and one has a false belief. It seems that 19 shooters
know that they shot the convict, and this despite the fact that their evidence for
believing they shot him is consistent with their belief being false.