In an industrialized society, where your rate of digging gold out of the ground is fully decoupled from how well the rest of the economy is doing, you will be c

In an industrialized society, where your rate of digging gold out of the ground is fully decoupled from how well the rest of the economy is doing, you will be constantly adjusting the exchange rate. That will sooner or later lead to speculation on future adjustments blowing up your gold standard.