No matter how careful the authors are, even if multiple people review the manuscript before publishing, humans make mistakes. Paper books cannot be corrected immediately, so authors publish the errata sheet and show what should be corrected. Usually, there is an official page about the book on the publisher’s website, and there should be errata in it. Books without errata are perfect from the beginning, or the authors do not intend to improve the book. I think the possibility of the former is very low.

en.icon --- This page is auto-translated from [/nishio/(1.2.5.2) There is good errata](https://scrapbox.io/nishio/(1.2.5.2) There is good errata) using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at [@nishio_en](https://twitter.com/nishio_en). I'm very happy to spread my thought to non-Japanese readers.