Anecdotally, this dovetails with another HN story "How to achieve greater productivity of teams (lostgarden.com)" http://news.ycombinator.com/item?id=971708 htt

Anecdotally, this dovetails with another HN story "How to achieve greater productivity of teams (lostgarden.com)" http://news.ycombinator.com/item?id=971708 http://news.ycombinator.com/item?id=971708 He went from massive overtime (75-100 hours/week?) to a lot less (50 hours/week?) and got a substantial productivity improvement - same output at half the time spent.