>>266707110
Early was covered better, but it does get more rushed and less complete post-Facebook acquisition. Also still not a great many details about Valve's side. For instance, who, truly, were all the people who built Valve's Room demo? Alan Yates had claimed that Facebook did not in fact poach all the talent that was responsible for it, but if so, how much talent was really left, and how important were the people who were left to Valve's future VR efforts? All I remember is Joe Ludwig, but the book didn't mention anyone else who I remember stayed at Valve. 

The book mentioned mobile VR as Carmack's focus and desire to spearhead, but not that it'd be one of the conditions for which he'd join Oculus, unless I read something wrong. It very briefly, like most of the other details in the later half of the book, went over why Carmack felt the desire to do mobile. Without context, it might've made sense that the only reason might be that phone holders could be a convenient future of adoption, but the reality for the time was that it would not be good enough compared to a PC VR experience, which Iribe argued for and I think readers would tend to agree with given the details or lack of details in the book about Carmack's vision of the future and about the way in which he had gotten to work with Samsung.