This paper explores some questions about the use of models of nursing These questions make various assumptions about the nature of models of nursing, in general and in particular Underlying these assumptions are various philosophical positions which are explored through an introduction to postmodernist approaches in philosophical criticism To illustrate these approaches, a critique of the Roper et al model is developed, and more general attitudes towards models of nursing are examined It is suggested that postmodernism offers a challenge to many of the assumptions implicit in models of nursing, and that a greater awareness of these assumptions should lead to nursing care being better informed where such models are in use