【明報專訊】I AM SURE people proficient in the use of English would realise there is something inherently weird in the title of this article. Those who do not know what I mean should read on and be reminded that English is a very difficult language. Just for the sake of younger learners, the two sentences, "Let's eat Grandpa" and "Let's eat, Grandpa", are telling two totally different stories, the former, without the little comma, probably belonging to the gruesome Walking Dead television series, the latter, with the tiny pause, being in the script of a heart‑warming family scene.