 Most theorists seem to agree that possessing these four abilities, at least to some degree, is necessary for capacity. The primary issue (explored further in  §6)  is about whether the four abilities are always sufficient or whether there are cases in which something else, some further abilities or some further feature of the subject’s choice, might be relevant to the assessment of capacity. The three elements most commonly cited by critics are (1) the subject’s emotions, (2) the subject’s values, and (3) the authenticity of a subject’s choice.