Abstract

The chapter considers the relationship between the _DA_ and the _PN_, and the _Sens_. in particular. Because the sense-objects are causally prior to acts of perception, _Sens_. can account for a variety of sensory activities by providing a fuller account of the sense-objects than those required to define the sense-faculties as such, the task of the _DA_. The composition of the sense-organs is also used to explain a range of features of perception (such as how we smell by breathing) which, again, do not enter into the definitions of the senses. Animals with the same senses may differ with respect to such non-defining attributes of perception. _PN_ generally makes greater use of material explanation than the _DA_ because the phenomena considered are not fully determined by the capacities of the soul as such.