The argumentation is uneven, but the good stretches contain enough new ideas to make it a good read. The core of the book is the notion that referential links have to be *maintained*. A subsidiary theme is that your metaphysics should satisfy two constraints: it should make sense of computer science, and it should allow for the world being intrinsically very, very messy. If you like Bruno Latour, and you're interested in metaphysics and epistemology, you'll probably like this. (If you dislike Latour, you'll probably dislike this.)
