Vague Objects

In this chapter the theory of propositional vagueness is generalized to vagueness at other types. Once propositional vagueness is supplemented with a primitive notion of objectual vagueness, it can be seen that property vagueness, adverbial vagueness, operator vagueness, and so on, may all be defined. The chapter examines some widely discussed accounts of objectual vagueness that understand objectual vagueness as standing in vague identity or mereological relations. A more general test for objectual vagueness is proposed, according to which an object is vague if it converts any precise property to a vague proposition.