  It’s natural, then, to look to science for a defense, and especially physics (or physiology). Appeals to “current physical theory” (Antony and Levine 1997, p. 100), “the development of the sciences” (LePore and Loewer 1987, p. 630), and “physics textbooks” (Melnyk 2003, p. 289) are common, but what exactly in physical science supports the premise? Papineau’s (2000) historical survey outlines two arguments. The first is inductive: when physics has investigated the nature of “special”, macroscopic forces, it has discovered that they all reduce to a small number of basic, conservative physical forces. Generalizing from this evidence, the idea is that all such forces will reduce to the same small set of physical forces. The second argument aims at establishing a weaker version of Completeness, one restricted to the human body. Were Completeness false owing to the routine intervention of souls, physiology would have discovered anomalies within the human body, events that have no physical explanation. But a century of increasingly detailed investigation has revealed no such anomalies. It appears as if the causes operating within our bodies are entirely physical (compare Armstrong 1968/1993, pp. 32–3; Melnyk 2003, p. 289; for a response, see Montero 2003).