The Romans invented concrete (handy stuff), plumbing, the agueduct, permanent roads, the postal service, the building arch, surgical tools, and oh yeah currency debasement... Should I continue? History... The Chinese used silver as money for thousands of years..they tried paper 500 years ago...went bust pretty quick..then back to silver again..they are on paper again now of course....I wonder what happens next? Did you know about 1 ounce of silver is contained in a normal solar panel.. Move that dirt...