What Goes Up Must Come Down

It's the law, people! Law of gravity, that is. Sir Isaac Newton meant it literally but as it turns out this very same law can be applied metaphorically. Get it? If not, let me offer you some clues: Louis XVI , the Roman Empire, the Ottoman Empire, Portugal, Spain, the Ming Dynasty, the Empire of Japan... with the current economic turmoil in the US and around the world, could we all be headed down?