Falling into the rabbit's hole
Even though I know all of these concepts and definitions because I studied them in my Computer Science lessons I still find your posts fascinating and have to go and read them until the very end. Maybe is the perfect mix of not-so-complicated language but still very rigorous and those illustrations are really top-notch. Keep being an inspiration, Tivadar.
That was great going through the process of drawing multiple graphs and trying to be smart, only to read further on and discover that it’s not possible. Loved it though, thank you and I look forward to continuing this lesson.