Personally, the only people I believe are those who are always right. For instance, Kernighan and Ritchie talk about the 'register' keyword in C. All very well, but I heard that one day Brian Kernighan said he'd brew a pot of coffee and just forgot. I'm not sure I can trust him so I never use that keyword. Too risky.

Maybe if they would annotate who did which section. I bet Ritchie would never have done this.