What is missing? For example, your first question exposed that you had a misconception of what "beacon" means, and the first sentence of these excerpts is exac

What is missing? For example, your first question exposed that you had a misconception of what "beacon" means, and the first sentence of these excerpts is exactly an utter layperson definition of what "beacon" actually means. I don't know how you can say "I read the article" and then read these bits yet a 2nd time, and still claim to have those questions.