Consider this question: What is charge actually? How to define it?
In the question, the asker explicitly specified that he wanted an intuitive explanation of charge, without using "quantum mechanics or advanced particle models." The response by PhotonicBoom fit these criteria well, but the one by JamalS referenced QED.
On one hand, I feel that high-level answers on "low-level" questions (e.g. JamalS's answer) do not respond to the question, since the user explicitly did not want a complex answer. On the other hand, the answer provides insight to other members of the community. Is it acceptable to provide answers which surpass the difficulty level requested by the user?