I don't want to sound like a pessimist, but that feels like a rather large number to sustain over a long period for a book like this. It convers a niche field i

I don't want to sound like a pessimist, but that feels like a rather large number to sustain over a long period for a book like this. It convers a niche field in a language with a relatively small userbase. I would love to be proven wrong though, and I really hope that you do sell a lot of books. I might even buy it if I decide to pick up Rust again. Best of luck!