 The importance of this Pythagoreanizing slant can hardly be overstated. In agreement with Iamblichus’ vertical conception of reality, it means that everything below this dyad is to be regarded as a mix of determination and indetermination: and this includes gods, as well as Forms such as those contained within the Model, some of which are claimed to partake in movement and alterity (see In Timaeum [D-1973: Fr. 46]), while less elaborate versions of Platonism would rather view them as solely determinate, viz. thinkable. In a text from Simplicius’ commentary on the Categories (135.10–16 [DL-1972: Fr. 37]), the productive capacity of the One appears to reflect these two dimensions: 