Money is a fascinating topic. Since we are on it, does anyone know when and how the first money was created? The only reason I do, is that someone asked me that question once and I researched it.
Originally it arose because barter societies needed a physical symbol of real wealth (cattle, horses, goats, chickens) in order to trade efficiently. When the first communities arose and the members traded goods, they had to bring them all to market and physically exchange them there. Eventually, they realized that they didn't actually have to take a hundred cattle to the market if they could instead bring a symbolic object that represented the cattle. Then they could trade them for either real objects or for symbolic objects brought by other traders for their goods.
The need for documentation of the validity of the symbols (originally clay pellets with the family or clan name pressed into them and some sort of official seal) brought more and more resilient and difficult-to-counterfeit money until they finally got to the point where they monetized the entire local economy of a city-state and minted official coinage backed up by the rulers of the realm.
Once the printing press was perfected, they were finally able to move away from coins and moved to bills.
Today we don't even need paper, but have money that doesn't even have physical substance, but exists only as electronic ghosts in computer networks ( including Bitcoins).
It's ironic that even in the latest iteration of money, it can still be stolen apparently. I read recently that someone succeeded in stealing a massive amount of Bitcoin. heh