In fact, whether it's the articles I personally write or actual usage, when it comes to true understanding, it's not complicated. It's just like understanding Skill: what it demands is management of documents and document content, rather than management of prompts.
But writing Skills well isn't easy either.
Similarly, using loops effectively isn't as easy to grasp as one might think.
The most important thing is still to start using it first.
Practice is the sole criterion for testing truth.