Browsing the site of the "Principia Cybernetica Project", I've noticed that the philosophical nodes are mostly empty. So I've tried to look elsewhere. The only book I've found was: "Scientific Materialism" by Mario Bunge. Somehow it does not satisfies me. Probaly, because it deals only with part of the subject, and not with the whole system. 1. What are the basic tenets of the scientific materialsm? 2. Is there a better book on the subject?