Brand continues to think about tools, and what they can do, in their broadest sense. That focus brought him to his latest writing project—a book, which he is drafting publicly, online, called “Maintenance: Of Everything.” As the title implies, Brand argues that if people can develop a kind of enlightened “maintenance mind,” we can improve our lot in many of our endeavors—ranging from how we work and play to how we care for the planet, or even wage war. As he continues to refine the book, Brand is inviting comments from readers (and it looks like, so far, he has managed to reply to most if not all of them).