Pythagorean cup, also known as the Pythagorean Glass, Fair Cup and Pythagoras Cup. The Pythagorean cup is a form of drinking cup, which is a deep sense of control measures of a drink.

Tradition says Pythagoras, during water supply works in the island of Samos, around 530 b.C. moderated the workers’ wine drinking by the inventing the “fare cup”. When the wine surpasses the line, the cup totally empties, so the greedy one is punished.

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