[VLM]

I found working weird hours increased my productivity, because when a 500 person mini-skyscraper only has three or so people in it at 5am on a weekend, no one is sending email, no one is chatting, literally no one is here to interrupt me. This might even help at the coffee shop next door, I imagine 8:30 am at the coffee shop might be even worse than sitting in the office... but I bet 4am is a productive time.

I can physically be at work on a friday afternoon, but I guarantee I'll accomplish nothing other than being interrupted. It got to the point that I wouldn't even try to do stuff on Fridays... I'd just plan to sit there, maybe surf the net all day, until I get interrupted (which usually didn't take long). Its too risky to try to do stuff knowing you're heavily impaired by interruption, so trying to do nothing at all on Friday actually measurably improved my overall long term productivity, which I thought was interesting.