 Lewis himself had no interest in preserving traditional principles of modal logic. He always remained skeptical about the prospects of formalising modal discourse with boxes and diamonds. (see e.g. Lewis 1983d, 45; Lewis 1986e, 12–13). He thus rejected the presupposition in these objections, that “the language of boxes and diamonds affords a good regimentation of ordinary modal thought” (Lewis 1986e, 12).