The plane touches down and comes to a halt. Heading to passport control, one of the passengers stops at a vending machine to buy a bottle of soda — but the device is absolutely indifferent to all of their credit cards, cash, coins and everything else. All of that is part of a foreign economy as far as the machine is concerned, and as such, they can’t buy even a droplet of Coke.
In the real world, the machine would have been quite happy with a Mastercard (NYSE:MA) or a Visa (NYSE:V). And the cash exchange desk at the airport would have been just as happy to come to the rescue (with a hefty markup, of course). In the blockchain world, though, the above scenario hits the spot with some commentators, as long as we swap traveling abroad for moving assets from one chain to another.