" I think, therefore I am ". So began Descartes in his attempt to build a comprehensive picture of reality, starting with what he knew for sure. Like many philosophers, he pretended to mimic the newly-discovered certainty of Mathematics.  Descartes was barking up the wrong tree and his "axiom" instantly hit a dead end. Strangely enough, there are more than a few mystics, philosophers and neuroscientists who would doubt even Descarte's "axiom". The "self" may turn out to be an illusion. In the Universe we happen to inhabit, there is no sure path from "simple" to "complex". We need to start somewhere else. That's good news, since it turns out that we all know a Hell of a lot more than we thought we did. As Descartes realized, it's all uncertain to some degree, but that need not stop us from exploring an uncertain world. After all, we don't have an option. We learn very little about our minds by comparing them to ...