How does this work? Spending 4 years, full time from what it seems, on a book with a (let's face it) niche audience. While having (again, it seems from the post) a family with children, living in a first world country, flying regularly (I'm using this as a shortcut for 'getting out of the house for things more expensive than a hike in the woods'). So that's an opportunity cost of 200k for a book that would a runaway success if it made... 50k over its lifetime? Is there a backstory I'm missing here - is the author an already well-known internet celebrity living off Patreon or something like that (I couldn't find anything on the blog that indicates that)