thanks for the information. In light of this, it seems pretty silly: economy on a world scale isn't a line, it's more like a ring (country A has a deficit with

thanks for the information. In light of this, it seems pretty silly: economy on a world scale isn't a line, it's more like a ring (country A has a deficit with country B, which has a deficit with country ... N which has a deficit with country A) at best. Isn't it like saying everyone should trade everything at the same price with everyone?