 Progress in ethical theory, then, means improvements that render inquiry more discriminating, more revelatory of alternatives and  consequences.[41]  Improved deliberation is crucial to more effective inquiry; Dewey argued this requires being open to contributions from many sources: all sciences, social customs, jurisprudence, biographies, and, yes, even moral systems of the  past.[42]  Deliberation especially benefits from what Dewey called “dramatic rehearsal”, where creative and dramatic enactment adds to logical tools and helps illuminate the emotional weight and color of potential ethical  choices.[43]