Asking groups to define their own fitness functions was a little like asking a condemned man to decide how he’d like to be executed. Teams ended up spending too much time worrying over their formulas and making them ever more complex and abstract. “Being a two-pizza team was not exactly liberating,” says Kim Rachmeler. “It was actually kind of a pain in the ass. It did not help you get your job done and consequently the vast majority of engineers and teams flipped the bit on it.”
