> Head-space is great. On Friday afternoons people are usually tired and mess around anyway, so why not do something useful with that time instead of hanging around to do your 40 hours.
Honestly, this has always been table stakes for me. I hope I never work at a place where I'm judged on "hours my butt is in a seat" instead of "actual productivity". Particularly for creative work, it's just not how the human brain works.