Two things are especially memorable to me. One is a casual remark in the book that they found the best way to get things done is to pair someone very experienced and cynical with someone very inexperienced and naive. Combined they would get lots done together compared to either alone. I think this is still true today.
The other thing is the intro. It's about the head of the project getting a group together and renting a sailboat on vacation. On the sailboat the get tossed and at times feel like they barely survived and it ends with someone saying "if this was his vacation...what did this man do for fun!?"
To use a fancy word there's a "noosphere" around that carries knowledge and lore along with it.
Plus the usual kind of Deming wisdom about real knowledge organisation:
"in many ways opposite of traditional management...innovations are
started at the grassroots level.", and "people will give their best
when the work itself is challenging and rewarding."
That atmosphere is still around in engineering teams in smaller
companies where there's a good range of advancement within engineering
and some stable products so there's a stream of old-timers and
apprentices building and exchanging chops.