Then in the 1990s, lots of things happened in publishing, not the least of which was a complete distribution system collapse. (deanwesleysmith.com)
As they come in different sizes (or denominations), they can also act as a substitute for paper money in case of the fiat system collapse. (hardassetsalliance.com)
Even if men's system collapsed now, if all men died and we returned back to stone age, it is unstoppable. (judithcurry.com)