> This is so wild to me because output and work quality rapidly decline at (or well before) 40 hours a week.

Funny how all of this changes with agentic development - once you setup your agents and the initial productivity euphoria , most of the time you spend in deep brainstorming and leave agents to “handle the details”.

Which is both liberating - a lot less punishing mentally and not requiring so much flow focus, but on the other hand you have to keep more loosely held context in your head.

And agents need you attention constantly throughout the day, you leave them working overnight. While you are not in the office etc, and it’s hard to justify when an agent just needs “a quick look” or some confirmation and direction. You leave being paged all the time so you never really relax.

I think a lot of developers will end up feeling what founders actually go through, for better or worse, but also without actually getting the golden ticket option founders usually hold.

It’s just a very different mindset for work, though maybe requiring less chemicals to actually make work

I work on hardware development, that matches pretty well the time I can spend on high-creativity design tasks. I fill the rest of the time with tasks that could be outsourced, like assembling prototypes or laying out circuit boards, but I do myself because they are more like relaxing puzzles than demanding work.

When I have to work on single a software-only project, after about two weeks of sitting at a desk for eight hours a day, I absolutely have to do something else.

Some people moonlight other gigs (overemployed) and put unusually high levels of pressure to perform in themselves. So, 2/3x-ing that normal output is unsustainable but profitable. Context switching does take a toll when you’re putting out fires that have meetings attached. This was just an anecdotal example of a person who is running themselves into the ground. Startup culture of the 2010s fostered a lot of the myths of ultra-productivity and wealth without the backstory of drug abuse.

100% correct and this resembles my experiences and countless anecdotes.

You can’t reliably do more than 5 hours of heavy concentration work per day.

Organizations get in their own way when it comes to quality, almost every time.

That’s for maxxed out knowledge work. Most of running a business is simply doing mid grade knowledge/admin/management work in a responsible, cares-about-the-outcome aligned fashion, which you don’t get from some $50k/y admin person or middle manager.

I would say that less than 25% of a startup CEO’s workload requires the “well-rested, highest quality thinking” that you describe. A lot of it is simply quantity and determination. The output of “having grit” is not that you are suddenly smarter - it’s that you are less willing to stop.

To be honest, I really think some people use the “I'm so productive“ as an excuse for why they’re doing drugs and cover for addiction (even if mild). A lot of this so-called productivity is spinning wheels and jumping around.

The problem is it's hard to realize that is indeed the case.

^this