That was my favorite line in the article, and one of the most resonant thoughts about programming I've seen in a while. It's a big part of the reasons I choose to mostly work alone, except when I really need the money. There's a mode of thinking and working that's both joyful and effective, and a lot of it is which particular things are actually concerns/strengths/weaknesses for me. Every time I work on a team, I have to contend with the union of everyone's concerns: the juniors, the seniors, the managers, their managers.... That mode is stress and misery.