Mind of a Rock
By JIM HOLT
Published: November 18, 2007 – New York Times
The doctrine that the stuff of the world is fundamentally mind-stuff goes by the name of panpsychism. A few decades ago, the American philosopher Thomas Nagel showed that it is an inescapable consequence of some quite reasonable premises. First, our brains consist of material particles. Second, these particles, in certain arrangements, produce subjective thoughts and feelings. Third, physical properties alone cannot account for subjectivity. (How could the ineffable experience of tasting a strawberry ever arise from the equations of physics?) Now, Nagel reasoned, the properties of a complex system like the brain don’t just pop into existence from nowhere; they must derive from the properties of that system’s ultimate constituents. Those ultimate constituents must therefore have subjective features themselves — features that, in the right combinations, add up to our inner thoughts and feelings. But the electrons, protons and neutrons making up our brains are no different from those making up the rest of the world. So the entire universe must consist of little bits of consciousness.