As you venture further into the world of cryptocurrencies, at some point you have to consider the concept of money. Once upon a time, we bartered with each other, swapping one product for another. Perhaps you’d give me some fish in exchange for some potatoes. I might then swap some of that fish for some seeds, and so on.

As societies evolved, so did our money. We started to use things like cowrie shells or gold as a medium of exchange for goods and services. From there, we eventually reached fiat money — like the dollars or euros that we use today. These aren’t inherently valuable: A dollar is worth a dollar because we give it that value.

Now we have cryptocurrencies. One way to think of crypto is that it’s like digital cowrie shells: tokens you can swap for goods and services.

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