This is a smartly written article that compares the schedules of managers and “makers,” and describes what happens when they conflict.
There are two types of schedule, which I’ll call the manager’s schedule and the maker’s schedule. The manager’s schedule is for bosses. It’s embodied in the traditional appointment book, with each day cut into one hour intervals. You can block off several hours for a single task if you need to, but by default you change what you’re doing every hour.
I’ve thought about this before but would have never been able to describe it so well.