Your bank makes a mistake and adds a million dollars to your account balance when you tried to deposit $100. In this scenario, the bank also tells you: “we are

Your bank makes a mistake and adds a million dollars to your account balance when you tried to deposit $100. In this scenario, the bank also tells you: “we are giving you a million dollars, it’s yours”. Then, 3 years later, someone else at the same bank says: “oopsies, we actually made a mistake, so we withdrew that million from your account”. It’s even worse, imagine you actually received that million, as a payment for something, from someone else who originally received it from the bank.