 The Completeness Question: On Bueno and Shalkowski’s view we arrive at knowledge of modal propositions through knowledge of modal properties. But how do we gain knowledge of modal properties in the first place? For Bueno and Shalkowski properties are understood in a deflationary way, that is, they are not characterized in terms of universals or abstract entities. They are simply traits of objects. We know that the vase is fragile because it is made out of glass and glass can be broken if struck. But knowledge of the fact that glass can be broken is itself modal knowledge. Hence, some knowledge of modal properties is yet to be accounted for.