 John Campbell (2002a, 2002b, 2005, 2011) has argued that there is an important connection between the nature of the conscious perceptual experience that occurs when we veridically perceive the world and our ability to think demonstratively about the mind-independent objects that we perceive. He argues that only a ‘relational view of experience’ can adequately acknowledge the role of conscious experience in making it possible for us to think demonstratively about the categorical properties of the mind-independent objects we perceive, and this relational view of experience commits him to a form of disjunctivism about perception.