Third, a capability theory of justice will need, just as all other theories that are derived from the general and underspecified capability approach, to address the issue of selecting, quantifying and aggregating of dimensions. For the case of theories of justice, the problem of selecting, quantifying and aggregating turns into the question: ‘in which dimensions should we evaluate justice, how should we construct metrics in these dimensions, and how should we aggregate all the dimensions for overall assessments of justice?’ The general challenge of selecting and aggregating which was discussed above therefore also applies here.