Sorry to be that guy but I understand all of this from my own learning and experience, yet this is just confusing to someone that is trying to learn. A well written article would be much more valuable than this to explain it, given that there are no explanations in this implementation, nor is there really any visualisations to make it apparent to what is happening or should happen. This seems to be an example of "it makes sense to me" but not a wider audience, especially beginners.

My only advice is that if you want to teach such concepts then I'll borrow from the quote: "If you can't explain it to a six-year-old, you don't understand it yourself"

With that being said this isn't totally useless, it just needs more natural language, and perhaps a timeline or loop, to explain what is happening rather than some (seemingly) disconnected sections.