The article explains the working of X11 from the ground up, with the goal of allowing people to understand and play with the fun parts of computers, such as graphics and audio. The author provides a detailed explanation of X11, including its history, architecture, and protocols. The article also mentions the limitations and problems of X11, which have led to the development of alternative display servers like Wayland. The author encourages readers to explore and learn about X11 and its alternatives.