Can anyone suggest a natural system that is also non-physical? Does the description "a natural system" necessitate the system being "physical"?

see Lawrence Cahoone http://www.philosophy.uncc.edu/mleldrid/SAAP/CLT/P07R.htm "Towards A New Metaphysics of Natural Complexes" I plan to outline a research program aimed at developing a new...

08 May 2012 1,001 10 View