The important distinction drawn is between the brain, a physical organ that exists within each human, to the mind, which is at this point an interdisciplinary concept which is defined and explored by psychologists, neuroscientists, and philosophers alike.<p>In general, I find the intermixing of science and philosophy an increasingly common situation for those interested in "the mind." For me, it is hard to reconcile the falsifiable and evidence-based nature of science with the inherently linguistic nature of philosophy. Philosophers have come to this question not due to their knowledge of neurology or psychology, but rather to heap on more theory to the word "mind" itself.<p>My question is: What is the practical use of this theory of mind? How does it "expand" my mind to be reminded that I use tools and props? Since it is clearly not news that all of us use tools and props, is the author's primary insight to claim that these are part of the mind? How does that claim aid society?