Maker’s schedule

I’ve read a very interesting aricle by Paul Graham about two different ways of scheduling: a manager’s schedule, which divides the day in hours, and a maker’s schedule which breaks the day into ‘half days’. Having an appointment somewhere halfway your ‘half day’ totally breaks your productivity. Having too many of these appointments are a 100% chance to ruin your entire week. That’s why a lot of people are starting to like to work between christmas and new year’s day for instance. Almost nobody is there to interrupt whatever you’re doing.

I know the feeling all too well and so far, haven’t seen it worded like this. Now, if I only can get my boss to understand this.