 Imagine that John presses a wall button that activates a treadmill in which Mary is standing still, causing her to fall to the ground and break an arm. Let’s assume that the action is objectively wrong, since it harmed Mary for no good reason, e.g., to save her from an incoming bullet. Now let’s try to determine what it would take for John to be blameworthy for it. Assume first that John satisfies all non-epistemic conditions on moral responsibility, like possessing whatever kind of freedom/control is required for blameworthiness. Now ask: of which things must John be aware at the time of action in order to be blameworthy for it and for the ensuing consequences? There are four plausible epistemic requirements involved: awareness of action, of moral significance, of consequences, and of alternatives. We’ll take them in turn.