Abstract

Alter’s The Matter of Consciousness is not only the most systematic defense of the knowledge argument, it is so crystal clear, so compelling, that it should be required reading not only for those interested in consciousness, but for those interested in clear philosophical writing. In some circles The Knowledge Argument (KA) gets a bad rap. Philosophers in those circles should read this book. Though I am someone who takes the argument quite seriously, I have argued that the metaphysical conclusions of the argument can be resisted. Alter has convinced me that in many cases my arguments have come up short, and at the very least require further clarification and defense. For the purpose of these comments, I’m going to focus on his criticism of “subjective physicalism” (Howell, 2013) and its acquaintance response to the knowledge argument.