You have to look across a span of time. Day 1: 16 hours, 16 work units Day 300: 16 hours, 2 work units Burnout comes in when your pace is unsustainable. We ar

You have to look across a span of time. Day 1: 16 hours, 16 work units Day 300: 16 hours, 2 work units Burnout comes in when your pace is unsustainable. We are debating where the sweet spot is. Maybe it's 8 hours a day for you. Maybe it's 10 for Carmack. Maybe it's 6 for me. I don't know, but I doubt it's as obvious or linear as you seem to be thinking.