The Startling Convexity of Expertise

Don’t divide your attention: focusing on one thing yields increasing returns for each unit of effort.

At a micro level, an extra hour of focus on the current project has a much higher return than an hour on something new, or worse, 5 minutes each on 12 new things. Before you ever do something new, you should understand the opportunity cost vs. exis... See more

As a lower bound, you have to like your work more than any unproductive pleasure. You have to like what you do enough that the concept of "spare time" seems mistaken. Which is not to say you have to spend all your time working. You can only work so much before you get tired and start to screw up. Then you want to do something else—even something mi... See more

This is a question of balance. Those who come to me and say, “You know, I work 15 hours a day,” I say, “I am not interested.” I am interested in the quality of working hours, not the quantity. The brain of the human being. Do you think that during the first five hours of the day you are the same as you are in the last five hours? No way. You’re tir... See more

Throughout my career I’ve noticed that when I work about 4-5 hours on something, I’m done. Regardless of whether I’ve allocated 6 or 8 or 10 hours to it, I either finish my tasks, or I run out of runway to finish them. Most of the time spent after that is just obsessive tweaking.

Most powerful people are on the manager's schedule. It's the schedule of command. But there's another way of using time that's common among people who make things, like programmers and writers. They generally prefer to use time in units of half a day at least. You can't write or program well in units of an hour. That's barely enough time to get sta... See more