b) people who cultivate this skill are unable to do deep work during the day; For me, it was the other way around: inability to do deep work during the day (du

b) people who cultivate this skill are unable to do deep work during the day; For me, it was the other way around: inability to do deep work during the day (due to all the distractions already mentioned) forced me to cultivate a 10h-19h work schedule, with the accompanying sleep schedule (roughly from 01h-09h).