I'm not surprised. The only empirical evidence we have for a practice that increases productivity and reduces errors, across all forms of knowledge-based work,

I'm not surprised. The only empirical evidence we have for a practice that increases productivity and reduces errors, across all forms of knowledge-based work, is sleep and low stress. As I understand it the only reason we have a 5-day, 8-hour work week is because North American rail workers' labor unions struck for it. Because workers, over tired, were losing limbs and dying on the job. It's not because it's the optimal work week for managing teams of knowledge workers. What I am surprised by is how long it has taken the MBAs and suits to realize this.