blum delivers on the "center" of the internet as places. using (my terms) a graph-theory metaphor: edges and nodes, with equal attention to both. but only the stuff you can see. i.e. we don't hear much about the soft stuff. TCP/IP is mentioned, barely, HTTP not at all. email in terms of his sending pictures home. It would have been good to hear what the "UU" in UUNET stood for, for example. for me, the missing ingredients in this book are the invisible architectural components.