Teslas and Edisons did insane work hours most people would consider suicide these days. In my experience these are largely a function of volume, quantity and r

Teslas and Edisons did insane work hours most people would consider suicide these days. In my experience these are largely a function of volume, quantity and relationship with your work. Most managers I know can get by even 2-3 hours of work/day. This is true because the work is largely meta- Delegating, tracking things et al. If you are involved in your work at a lot more micro level, then the speed of the project is the function of your involvement with the project. This fantasy of achieving extra ordinary things doing just 5 hours of work/day is largely a millennial thing. As a Indian millennial myself, I find this attitude sick. Our fathers used to largely look these things as 'opportunity'.