I think the number of people who can consistently produce output 90 hours per week, over 50 weeks, is so small as to barely even exist. The people that claim t

I think the number of people who can consistently produce output 90 hours per week, over 50 weeks, is so small as to barely even exist. The people that claim to work 90 hour weeks are generally entrepreneurs who include lunch meetings and things like thinking about strategy outside of the office, in those hours. If you own the business you never really stop thinking about it, but that is a completely different measure than for an employed individual contributor.