 In 1979, David Lewis and John Perry each offered arguments for a distinctive category of self-locating belief (Lewis 1979; Perry 1979). To understand the argumentative landscape, it’s useful to think of both Lewis and Perry as first arguing that a particular theory of belief is inadequate, and then offering different remedies for its inadequacies. We’ll call that initial theory of belief the “Simple Picture”, then characterize rival theories in terms of how they supplement the Simple Picture to remedy the problems Lewis and Perry identified.