This episode is about vending machines. The first reference to a vending machine is from the 1st century AD in Egypt. The reference is in a book called “Pneumatika”, written by Hero of Alexandria. In it, there is a detailed description and a picture of a device, which dispensed water when you put in a five-drachma coin. This was invented for dispensing equal amounts of sacrificial water at Egyptian temples. This was a source of money for the Egyptian temples, and it also made sure everyone got t...
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