I'm not saying we should all be artists and drop any work on improving science or technology. To the contrary, some people really thrive doing that, and who am

I'm not saying we should all be artists and drop any work on improving science or technology. To the contrary, some people really thrive doing that, and who am I to outlaw it. But this is about working 80+ hours a week to achieve that. Changing the world is possible in 40 hours a week. Or 30, or 20. It may happen more slowly, but it won't leave so many train wrecks of burnout in its path. (Apart from overall total productivity not necessarily being lower with a 30 hour week than a 50 hour week as the increased energy and motivation can often times easily offset the fewer hours.)