Philosophy Research Archives

Volume 11, 1985

John A. Barker, Thomas D. Paxson Jr.
Pages 41-76

Aristotle vs. Diodorus
Who Won the Fatalism Debate?

We develop a modified system of standard logic, Augmented Standard Logic (ASL), and we employ ASL in an effort to show that, contrary to prevailing opinion, both Aristotle and Diodorus presented impressive arguments, having valid structures and highly plausible premisses, in their famous fatalism debate. We argue that ASL, which contains standard logic and a full system of modal and temporal logic emanating from a modicum of primitives, should not only enable one to appreciate the sophisticated philosophizing which characterized this ancient debate, but should prove to be quite useful in application to contemporary issues.