 Many neutral monists have been more forthcoming, offering examples of neutral entities with which we are familiar. The three traditional neutral monists—Ernst Mach, William James, and Bertrand Russell—all pointed to experience, when attempting to provide examples of neutral entities. Mach speaks of sensations, James of pure experience, and Russell of sensations and percepts. Predictably, this fueled the suspicion that neutral monism is nothing but rebranded phenomenalism. Others have sought the neutral base in the realm of the abstract. Kenneth Sayre, for example, turns to the mathematical theory of information and suggests that the neutral base is to be understood as the “ontology of informational states” (Sayre 1976: 16) that this theory presupposes.