The way I read it, it was totally independent of human factors, not excluding them. Ruthless prioritisation in this context means to focus your decisions of what to focus on around delivery of value to customers. You definitely have wiggle room for human factors.
Including those factors in your decision making is only way this can work, otherwise you will get poor quality at the end of it. At least that has been my experience in the context of software delivery.
Including those factors in your decision making is only way this can work, otherwise you will get poor quality at the end of it. At least that has been my experience in the context of software delivery.