The idea of a group mind isn't new. A business, an army, a musical band, a nation... Many such groups can be viewed as unique entities that possesses information, goals, and attitudes that help define them but which are not necessarily the same as those of their constituent members. (For example, ask your heart its opinion of your last bacon cheeseburger.) There is also nothing new about intelligent behavior emerging from a mixed group of humans and non-humans. (A sheriff, a bloodhound, and a map can find an escaped prisoner far better than any of them alone.) And that's pretty much my take on this book. There's nothing new here, no insights, no new information, no fresh perspective.... It's an interesting subject, and if I had chosen to write about it, I'd probably have used the word 'emergent' a lot, and talked considerably more about how difficult it can be to pin down precisely what 'mind' may be generating seemingly intelligent behavior. But, I didn't, and I'm unlikely to. No one would pay me for the effort, and it doesn't sound like enough fun to do it without being paid.... Which makes me wonder why I'm bothering to write this review. Another good question.