Ability to perform is in part a function of age which the article leaves out completely. 40h/week is doable for most but there are plenty of posts by more exper

Ability to perform is in part a function of age which the article leaves out completely. 40h/week is doable for most but there are plenty of posts by more experienced developers here who have said they strictly limit hours or report that when they were younger they were able to perform longer. There is also the question of sustainability. Not only health wise but also the social system around one gets impacted imho. somewhere beyond 45-50h. More work directed output may well be possible but at the cost of weakening the support system and with that increased risk in times of crisis. I'm willing to discuss this more in depth with the author once he's got a few grey hairs.