  There are, however, some cases in which coercion may alter an agent's responsibility for what happens as a result of coercion that don't raise the difficulties noted above. If, like some older ideas about coercion, we count uses of direct physical interference among the means of coercion, then in some cases it is comparatively easy to see how coercion can affect an individual's responsibility for things done or not done because of coercion. If one is restrained, incapacitated by violent means, or denied essential means to achieve a purpose, then it may be fairly obvious why one has an excuse for not doing otherwise than one did (See Anderson 2010). Relying on the principle of “ought implies can,” when one cannot do something, this provides a good excuse for why one is not responsible for failing to do it. Related questions may arise about how one came to be incapacitated; for instance, if one fails to care for one's children, and seeks to be excused for this neglect because one was incarcerated, we may want to know why one was incarcerated before crediting the excuse.  Nonetheless, there will be some cases where the answers to these questions will show that the coercee played no role in his own incapacitation, and is therefore not to be held responsible for things the coercer caused him to do or not do.