Combinations and syntheses of determinist theses, such as bio-environmental determinism, are even more common. Harris' work revealed him to be an economic determinist and, as such, ahistorical. This reflected his view that Marxism was not a determinist philosophy. This seems to reject both causal determinist and epiphenomenalist conceptions of mind. It also points to a technological determinist perspective in terms of reification. McLuhan was not necessarily a hard determinist. Therefore, in the Freewill controversy Hartley took his place as a determinist. Academic Peter Stillman believes Marx's status as a determinist is a "myth". Like Reclus, Ancel rejects German determinist views on geopolitics (including Haushofer's doctrines). Environmental determinist geographers attempted to make the study of such influences scientific. For Althusser, it is a mistake to attribute this economic determinist view to Marx. This leads him to unabashedly proclaim himself an economic determinist. If Skinner's determinist theory is right, he is merely the focus of his environment. The New York Radical Feminists (NYRF) took a more psychologistic (and even biologically determinist) line. Mills then provides discussion on Marx as a determinist.