> After months of refactoring I had an uncomfortable realization: I may have built a system that is above my own level of understanding. When everything works, that gap is almost invisible. When it doesn't, it becomes very real.

> "Sometimes I genuinely don't know what to do next without asking another model. That made me wonder whether I spent a year building a product, or partly building the appearance of one: something sophisticated enough to work, but which I don't yet understand deeply enough to truly own

This is always the reality for a sufficiently complex system. We only have an illusion of understanding

Now, more specifically about this feeling, it’s the way a lot of managers feel as well. They can only ask others to fix/change things, and they don’t really understand how/why things break in the code. Even if they lead the whole team to build the product