Swift identifies the second function of empirical research on justice beliefs in determining a part of the circumstances under which we might hope a philosophical theory to be realisable. Only if a theory is in line with common beliefs, it might claim to be feasible. Whether this role significant is itself a moot point, as many theorists are happy to design an ideal theory without being interested in its feasibility. However, I have already pointed out that too great remoteness from the real world causes problems, which cannot simply be solved by blaming the reality for a theory not being feasible. I do believe that it is certainly possible to find a place between a bad realism, which humbly accepts every common belief as sacrosanct, and an excessive utopianism, which ignores any empirical hurdles. After adequately filtered normative judgements pose serious challenges for the practicability of political theories. of a political theories.