ABSTRACT
This chapter shows how and why the debate over dispositions, their realness and role should lead the authors in the direction of a modified neutral monist view. Disposition ontology is quite a 'new ontology'. This ontology has a record that goes back to the 1970s, and has been in continuous and expanding development since then. Properties that are said to be categorical may be thought to live side by side with dispositional properties or they may be thought to be the only real ones. Dispositions apparently cannot be touched or smelled in a four-dimensional world. Dispositions therefore seem to have a kind of ghostly existence. For instance, if the authors do not have a concept of dispositions, then he/she will be inclined to think that the only alternative to physicalism is vitalism, spiritualism or something similar.
