Why is it that whenever anyone wants to discuss their ideas about something that other people have discussed previously, there's always someone leaps in and cries "beating a dead horse!" usually with a stupid picture or even stupider animation? If you were restricted in your communication only to ideas that had never been discussed by anyone before, how quiet the world would be. Philosophy? Beating a dead horse! Art? Beating a dead horse! Politics? Beating a dead horse! Have you not realised yet that beating a dead horse is beating a dead horse?