After the widespread use of stablecoins, if there are problems with them, the impact may be much greater than cash! For example, a certain stablecoin claims to be pegged 1:1 to the US dollar, but in reality, there is not enough support from the US dollar. Once everyone runs on it (wanting to exchange for cash), it may trigger panic like a bank failure, and because it is in digital form, the impact may instantly spread globally.