 Steven Kellert (1993) considers and rejects the claim that chaos theory represents a Kuhnian revolution. Although it does provide a new set of research problems and standards and, to some degree, transforms our worldview, it does not overturn and replace an entrenched theory. Kellert argues that chaos theory does not even constitute the emergence of a new, mature science rather than an extension of standard mechanics, although it may constitute a new style of reasoning.