Sellars’s treatment of mentalistic concepts has also inspired eliminativist philosophies of mind such as that espoused by the Churchlands.  The idea is that if folk psychology is like a theory, then, like any theory, it could be superseded and replaced by a better theory as scientific psychology and neuroscience progress.  Sellars himself, however, was unmoved by this idea, because the concepts of folk psychology (of the manifest image) are not focused solely (or maybe even principally) on the description and explanation of phenomena.  In the course of science, better descriptions of what is going on in our heads when we think and sense will be developed, but such descriptions could have only a part of the function of mentalistic language.  The language of agency, to which we will shortly return, is indispensable and cannot be replaced by the language of any scientific theory.  