I don't remember exactly what I wrote and how the logic works, but I generally remember the broad flow of how things tie together, which makes it easier to drop in on some aspect and understand where it is code-wise.

There's code structure but then there's also code philosophy.

The worst code bases I have to deal with have either no philosophy or a dozen competing and incompatible philosophies.

The best are (obviously) written in my battle tested and ultra refined philosophy developed over the last ~25 years.

But I'm perfectly happy to be working in code bases written even with philosophies that I violently disagree with. Just as long as the singular (or at least compatible) philosophy has a certain maturity and consistency to it.