Invention on Instagram: "The Pythagorean Cup, also known as the Greedy Cup, is an ancient Greek invention attributed to the philosopher and mathematician Pythagoras, dating back to around 500 BCE. At first glance, it appears to be a simple drinking cup, but it’s ingeniously designed to function as a practical joke with a moral lesson. The cup uses the principle of a siphon to teach moderation: when filled beyond a certain level, it drains entirely, spilling the contents out through a hidden chan