Is Fair Opportunity a Comprehensive Theory of Responsibility?

I challenge the adequacy of David Brink’s “master principle” of culpability. I allege that it fails to account for the moral relevance of ignorance of wrongdoing. I describe three cases in which I believe that Brink’s theory of normative competence cannot account for the significance of a variable that bears on culpability. In most of this paper I attempt to anticipate and reply to the various responses Brink might offer to my challenge.