The Pythagorean Cup
If you ever go to the Greek island of Samos, don’t forget to buy the Pythagorean cup from one of the many gift shops.
This cup was an invention of Pythagoras, so that the wine would not be drunk without measure at the conferences that the ancient Greeks made in 530 b.c.
If you want to see how it works and learn more, watch my youtube video: https://www.youtube.com/watch?v=Zm6lbI337lE