Imagine inserting a coin into a machine nearly two thousand years before modern vending technology existed. One invention used a coin-operated mechanism to dispense a measured quantity of water. The weight of the coin https://music.amazon.com/podcasts/69d3b9a8-ce50-4beb-8cef-e2712da6057e/episodes/a76ffe28-6efc-4ae7-a23f-f87f572fdab7/e39life