 Anticipating the current revival in interest in neutral monism by a few decades, Kenneth Sayre (1929–) published his main ideas on neutral monism in the 1970s. Unlike the big three, Sayre finds the neutral base of his system not in experience, but in the Platonic realm of pure information, where information is understood in the strict information theoretical sense. His proposal must not be mistaken for the uncontroversial claim that that mental and physical processes can be described in information theoretic terms. Sayre puts forward an ontological claim about the ultimate nature of reality—that ultimate reality consists of informational states: