Doesn't look like it's been updated since 2020 (based on copyright page) Popular in:<p>2022 (91 points, 44 comments) <a href="https://news.ycombinator.com/item?id=32067559">https://news.ycombinator.com/item?id=32067559</a><p>2019 (134 points, 30 comments) <a href="https://news.ycombinator.com/item?id=19354465">https://news.ycombinator.com/item?id=19354465</a><p>~2018 (112 points, 8 comments) <a href="https://news.ycombinator.com/item?id=16087689">https://news.ycombinator.com/item?id=16087689</a><p>~2014 (41 points, 9 comments) <a href="https://news.ycombinator.com/item?id=8256469">https://news.ycombinator.com/item?id=8256469</a>