A purely digital economy would be a purely controlled economy. No one would be playing outside the game, making deals with briefcases full of dollar bills.

But do we want people making deals with briefcases full of dollar bills? Aren't most of us sound citizens already perfectly comfortable paying for things with a tap of a card? Cash seems to pass through our hands less every year. Some countries are even working to eliminate it.

Does that mean a cashless society is almost upon us? How will we think differently about money once we can no longer see or touch it?

Read the full prediction: Digital Currencies Replacing Paper Currencies Worldwide