A wonderful book. It's light on technical detail—well, void of it—but covers the human story and business background well, and the material is so fascinating, it's hard to believe how fascinating it is. Especially the origin story, which is like the early history of Silicon Valley in an alternate universe of the Midwest. People bringing their dogs to work. CDC getting started by selling stock out of a station wagon. Cray moving his lab further and further away from the managers. It's all so archetypal, most of all Cray himself.
A pattern that recurs through the book is that Cray's achievements worked out best when he collaborated with the much lesser-known Les Davis, who was a master of organization and execution. A good local newspaper article from Davis as of a few years ago: https://news.ycombinator.com/item?id=10334470. I hope someone has gotten a full oral history from Mr. Davis.
