 Counterexamples to the necessity of (CA) have been less frequently discussed (though see Wolf 1990), but they also raise important issues about ability. Consider a case where a good golfer misses an easy putt. Given that this golfer tried to make the putt and failed to, it is false that she would have made the putt if she had tried to; after all, she did try it and did not make it. (This thought is vindicated by standard views of subjunctive conditionals; see Bennett 2003, 239). But, as a good golfer, she presumably had the ability to make the putt. So this seems to be a case where one can have an ability without satisfying the relevant conditional, and hence a counterexample to the necessity of (CA).