The author wrote the chapter on app icon history for The iOS App Icon Book, and years later rediscovered an old research note from when they began exploring the Mac version of that chapter. That chapter was ultimately written by Michael.
At the time, the author struggled with the question of how to write a history of icon design for the Mac. The Mac, they noted, has a rich visual history. To get their creative juices flowing, they began by researching the different Docks across macOS releases, from OS 10 onward. They then compiled these into a single graphic, crediting a compilation of images on 512 Pixels as a valuable resource.
The author's goal with the graphic was simply to preserve and archive the visual history of the Dock. A high-resolution version of the image is available for viewing through the original post.
The post itself is brief by design. The author concluded it with a simple statement that this is all there is to it, with the image serving as the main contribution.
Source: Hacker News · Summarized by HeadlinesBriefing