Doctor of Nothing, Professor of Everything: A Field Guide to the Internet's Most Magnificent Useless Experts
Somewhere online right now, someone has spent three years cataloguing every instance of anachronistic footwear in prestige television. They know things about Victorian boot construction that actual historians don't know, because historians had other things to do. The internet democratized expertise in ways that nobody planned for, and the results are unhinged, specific, and genuinely kind of beautiful.