A philosopher needs both breath and depth in the discipline. There are a certain range of issues in which I have a primary interest reflected in all of the essays on this blog. But a philosopher cannot rely only on the writings of others in their field. To understand the implications of even narrow issues, one must read both opposing voices and something of other issues that may be but peripherally related. For me this is one of those books.
Is self-knowledge of the substantial variety on which Cassam focuses important to me as a person? Yes to some extent it is, and in fact the author covers that “to some extent” very well in his last chapter. Is self-knowledge important to me as a philosopher? Is it important to my specific interests? In my case crucially yes, but it is not a sort of self-knowledge, a knowledge of beliefs and why I have them (I do know what I believe and why I believe), wants, emotions, and character traits addressed in this book.
What I need better to understand is the quality of my evidence and whether it is evidence for what I believe. My primary interests often impinge on philosophy of mind (not our belief that other people or animals have minds, but rather what mind is, what makes mind happen in brains, and how this relates to physics, biology, etc) and much of what I believe is derived from a phenomenal examination of my own mind. I want to know if what I discover in that examination is genuinely evidence for what I believe.
This is a question that Dr. Cassam misses. I make no criticism of his work here. It is clear from his exposition that the metaphysics of mind is not his subject. Who or what is this entity that believes, wants, feels, and has character traits? None of what Cassam writes here hinges on any particular metaphysical view of this entity. Yet surely an answer to this question is about one’s self? It is about what one believes constitutes the self. My interest is in what I might learn of the self as compared to knowledge about myself. While not addressing that question, this book provides a helpful context. Thanks to my reading, I am better positioned to describe that entity and what I can (perhaps) infer of it in the context of self-knowledge more broadly conceived.
As with many other philosophy texts I’ve reviewed over the years this one is both professional and well written. There is almost a formula for doing good philosophy in the analytic tradition. Begin by clearly stating the nature of the problem you are going to address. Briefly review the history of the issue; make distinctions, show that the problem is more than trivial. Here the subject is something of a narrow subset of philosophy of mind, epistemology, phenomenology, and even psychology. It is the nature of what, how, and why we know, or fail to know, about ourselves as this pertains to our beliefs, emotions, desires, characters and more. Cassam sketches distinctions between the trivial and the substantial in self knowledge, and also the occasional (what I’m thinking, believing, feeling, wanting, right now) versus the standing (what do I believe, fear, want, and so on over time).
Next address the various theories about the subject in the literature and show why they are inadequate, if not entirely then at least partly. This review often, and in this case does, take up much of the book. Third make a positive argument for your own theory, in this case what Cassam calls “inferentialism”; describe it carefully and show how it addresses the inadequacies of the other dominant theories in the subject area. Then address specific objections to your theory advanced by others and show why they do not have the force their authors believe they do.
Cassam does all of this masterfully and manages not to be dry in the doing of it. He ends with two chapters on related matters, one being self-ignorance itself distinguished into variations and brought under his theory, and lastly a chapter on a meta-issue, why these inferences, why self-knowledge is or might be important.
Is Inferentialism convincing? Well yes, given how much Cassam emphasizes its broad but not always universal applicability. His claim is that Inferentialism covers much of the ground because it can be conscious or unconscious (sometimes this last is better understood as “interpretation”) and would often, but not always, be the dominant means by which we come to know things about ourselves. In short there are a lot of distinctions to be made about what self-knowledge is, and Inferrentialism happens to address all of them (including self-ignorance) to a greater or lesser extent, but is never, or almost never, absent entirely from the process of coming to know things about ourselves. Objections to the idea are unable to gain purchase because Cassam fully accepts that other theories have explanatory power here and there about this or that sort of self-knowledge, but points out that none of these, even if they happen to be operational in specific cases, preclude an inferential component to the path to self-knowledge. It is about as neat and tidy a package as I have seen.
“Self-Knowledge for Humans” would make a superb introduction to the style of Western Analytic Philosophy. In addition it well illuminates the issue and makes a substantial contribution to our grasp of what a solution looks like.