I get the feeling that 15 hours is a ballpark number and there are certain occupations that do require more time "in the seat" to make good progress. It's prob

I get the feeling that 15 hours is a ballpark number and there are certain occupations that do require more time "in the seat" to make good progress. It's probably also true that if you're putting in only ~15 hours of productivity, you're probably going to dedicate some extra time to learning new things, advancing skills, etc. My experience tells me that, as a developer, an awful lot of what I do could definitely fit in that 15 hour window if there are 2 other people also doing "my" job. Splitting up my week's tasks with the 3 of us putting in 45 hours would result in much more productivity, in my opinion. I'd then have much more time to do things I wanted to do, and experiment with new tech for shits and giggles. That often gets pushed back in favor of other life experiences these days.