This paper aims to draw out two distinct strands in Locke’s account of our simple ideas of experience: an instrumental and an immersed model of experience. The place of pleasure and pain in sensation is key to the distinction between these two models. After showing this equivocation in Locke’s account, the author considers its implications for his account of object perception, or our ideas of particular substances, and suggests that considering these issues in Locke might afford insight into contemporary discussions of the Binding Problem. She concludes by showing how Berkeley and Condillac resolve this equivocation in Locke and considering why Locke himself might have failed to do so.