Who is curious to see Gresham's law in action in El Salvador?

"Gresham’s law, observation in economics that “bad money drives out good.” More exactly, if coins containing metal of different value have the same value as legal tender, the coins composed of the cheaper metal will be used for payment, while those made of more expensive metal will be hoarded or exported and thus tend to disappear from circulation." https://www.britannica.com/topic/Greshams-law

The modern version of course consists in a situation in which both USD and Bitcoin can be used for payments. The difference is no more in the metal but in the concepts on which they relay.