So that the inventory (supply) of MOE develops from silver to help you gold+silver
“Now suppose that some one invents ways to decide to try the fresh new purity of silver with ease, to make sure that silver can be used given that good MOE also. However, if the existing stock away from silver was currently willingly kept (because of the jewelry request) during the present cost of silver, we need to include one jewelry demand for the interest in gold+silver, therefore, the quantity of MOE=gold+silver needed commonly go beyond the original need for MOE=silver, by the exact same number your have has grown. No one provides any extra incentive to finish gold+gold.”