Such an example shows that (CA) is false without assuming anything contentious in debates over freedom. It turns rather on a simple point: that psychological shortcomings, just as much as external impediments, may undermine abilities. (CA), which does not recognize this point, is therefore subject to counterexamples where such psychological shortcomings become relevant. We may, if we like, distinguish ‘psychological’ from ‘non-psychological’ ability, and claim that (CA) correctly accounts for th