 Dummett’s way of understanding categories of objects also opens the way for a reply to this objection. For Dummett argues that, without some associated categorial concept, we cannot single out objects (even using names or demonstratives) (1973 [1981], 571). Categorial concepts are necessary for us to single out ‘things’ at all, and cannot be derived from considering ‘things’ preidentified without regard to categories. (It would thus follow from this that Johansson’s idea that we could arrive at categories by abstraction from considering individual things would be wrong-headed.) On this view, then, categories not only may but must be distinguished primarily by way of distinguishing the identity conditions criterially associated with the proper use of different sortal terms and names. If we cannot refer to, discover, or single out objects at all except by way of a certain categorial conception (providing application and identity conditions), then the categorial differences in our sortal terms or names (marked by their differences in identity conditions) are ipso facto, and automatically, category differences in the things singled out by these terms – the possibility of a ‘mistake’ here just does not arise, and the connection between the category of an expression used to refer to a given entity and the category of the entity referred to is ensured.