[munificent]

All of that is true, but it's also worth balancing that with the fact that when I was writing that book, I was only spending about an hour a day on it, and now I spend zero hours a day. The long tail of passive income seems to be pretty long so far.

You're right that it will be hard for many people to make a living solely off writing technical books. But I also think it's true that you can make more money that most people realize just by not giving a traditional publisher a huge cut of it. Maybe not enough to live on, but likely enough to make it worth your while.