Ability,Frankfurt Examples,and Obligation

Frankfurt examples invite controversy over whether the pertinent agent in these examples lacks the specific (as opposed to the general) ability to do otherwise, and whether what she does can be obligatory or permissible. We develop an account of ability that implies that this agent does not have the specific ability to refrain from performing the germane action. The account also undergirds a view of obligation that entails that it is morally required or prohibited for an agent to perform an action only if she has the specific ability to do, and to do otherwise than, perform it. Therefore, in Frankfurt examples, it is neither obligatory nor impermissible for the relevant agent to do what she does.