Abstract

This note effectively presents several arguments for the soundness of A-theories, and that their two series are required for a complete description of time in physics. The paper makes several key contributions: First, it establishes an empirical basis for distinguishing A-series and B-series time through direct experience and observation. Second, it presents an important check on this result in giving five mini-arguments that A-theories should indeed be right. Third, it gives a novel kind of argument leading to falsifiable predictions. Fourth it gives a detailed account of clocks in this theory: sundials, analogue, digital, and atomic. Fifth it connects the clocks of a computer to the clocks of its software.