Agree, I would love to shadow someone who claims they regularly (and productively) work 90-100+ hr weeks of focused, mentally-taxing labor aka System 2 thinking

Agree, I would love to shadow someone who claims they regularly (and productively) work 90-100+ hr weeks of focused, mentally-taxing labor aka System 2 thinking. Otherwise all of us easily "work" 100-112/wk if we simply limit our downtime and count any sort of order/structure-producing tasks as work. Finance bros like to whine about their hours but I struggle with the notion that updating an Excel model and/or plowing through market research is mentally taxing beyond the volume of reps. The best tales I've really heard of sustained & taxing performance comes from the the SOF branches of the military, medicine, or game development. I've only ever met one genuine short sleeper so far who thrived on 3-4/night and was not a caffeine-riddled jack-in-the-box - he had superior physical performance as a gym trainer and there was plenty of evidence he worked the long hours, but his job was not as mentally demanding.