On Friday, we finished up the manuscript for the 7th edition of Computer Networks: a Systems Approach and sent it to the publisher. While sending the files to the publisher is something of a milestone, the work is never finished, because we continue to collect improvements and bugfixes from the community as we run this book as an open source project. The latest edition is the biggest refactoring of the book that we have done since our first edition came out in 1996, reflecting the changes in our field and in the way students and educators are approaching it. In this week's newsletter, Larry has written about some of the changes in how we present material, particularly in how have tried to teach students about the interconnectedness of topics that don't sit neatly in the old layered model. https://systemsapproach.org/2026/10/05/everything-is-connected/ 🧵 1/n