Everything in a Crypto Economy is Software

The impact of this cannot be overstated, even though we have been moving in this direction for some time.

Every country has its own economy and its own currency. In the US it is the American Dollar USD. In Costa Rica, it is the Costa Rican Colone CRC. And these can be traded with each other, at conversion ratios that change by the second, just like the Stock exchange.

The ability of a country to manage its economy varies widely, to say the least. And is frequently the cause of riots where hundreds are killed.

The latest practice here was the use of paper money with nothing valuable to back it up. It is called Fiat Money and works fine as long as the country's economy is strong.

Which brings us to Crypto. Which is based on Blockchains which only exist in the Software that forms each chain. These are often used to form cryptocurrencies.

The contents of every block contain the same kind of numbers but must include a cryptographic hash of the previous block. 

It will not attempt to explain what a hash is, but all you need to know is that it works. And the people in the banks that it is displacing are terrified of it.