I read it a few times and liked it. However, once I read what Philip Greenspun had to say about it in writing about Copeland's
Generation X [1], I rethought it, and came to agree with him. I've been unable to re-read Kidder's book since, though I've tried.
He essentially said that Kidder spent a year in the presence of engineers, and at no point came close to understanding what makes them tick, and in contrast Copland seems to have spent a week with some and instantly grasped their essence.
[1] (NOTE: NSFW photo at top of page) http://philip.greenspun.com/writing/reading
Edit: Fixed a grammar problem.