 As we have just seen, (C1) and (C2) are very plausible premises. It would seem, therefore, that BKCA is sound. If it is, we must conclude we don’t know we have hands. But surely that conclusion can’t be right: if it turns out that I don’t know that I have hands, that must be because of something very peculiar about my cognitive relation to the issue of whether I have hands—not because of the completely anodyne considerations mentioned in BKCA. So we are confronted with a difficult challenge: The conclusion of the BKCA seems plainly false, but on what grounds can we reject  it?[61]