Straightforward, slightly better than average for a business book, not as good as what I expect from narrative non-fiction. Took me a long time to finish, because everything else was more appealing. (Including Ruddiman, who in turn was repeatedly interrupted. Heck, even _Twinkie_ went by faster, and _that_ was repeatedly interrupted.)
I'm reading more in this subject area, more persistently than I otherwise would, because when I Was Very Small, there were two things I did very poorly on: handwriting (ha!) and Plays Well With Others. I long ago abandoned handwriting (altho I occasionally contemplate attempting calligraphy as a project, it is unlikely to ever get off the ground), but Playing Well With Others is clearly worth being able to do. Since I have no native skill, I'm stuck learning it the hard way.
Read Surowiecki's book first. If you're still interested, this is an acceptable follow-up.