10-11-07 10:29 pm: september 15, 2010, chapter 1, the science of psychology, philosophical roots of psychology, parents of psychology biology and philosophy. Intelligence loses its validity when it is explained. Descartes: rene started to believe that we were a machine. A highly complex machine more like a puppet. John locke: pushed the boundaries of descartes, said we were a complex set of chemicals reacting to do the things we do, not a soul. If its just physical matter reacting then we can control it scientifically, but if it was soul it cannot be controlled or researched. In psychology, you need proof, meaning you need to make a prediction and prove it is accurate. He said when we are born we are a blank slate and what happens molds us to who we are: tabula rasa- blank slate, this was not true genetics have an influence, nature vs. nurture.