Very interesting guy, this Richard dude. He designed video games, he's been in space, and he's been under the Titanic. (That's not really a spoiler; the book opens with this story. I won't go into detail. *wink*)
I read a select few non-fiction between lots of fiction, fiction, fiction. Probably half the non-fic I read is about writing fiction. So it's rare I read non-fiction that doesn't have a direct utilitarian value, but this was a fun one!!!