I try to avoid any advice that includes the word "must." It seems like Brian has a similar take.
The thing is, for big organizations to embrace something, they often need the template, the strict rules, the golden path. TV commercials must be thirty seconds. Public companies must have a big lobby and a receptionist. Like that.
The reason that there’s so much pressure and focus on finding an ironclad list of musts is that the big and the slow demand it. That doesn’t mean you have to listen to them.