Gold’s been used as money for a long time throughout history, around the world. When fiats fail, they tend to come back to gold. There’s a lot documentation on this. Sure, there are times when there’s some other asset that’s out performing gold. But when the economic climate starts getting sketchy, it’s relative strength is increased. Everything has some kind of purchasing power. So measuring items against a similar group may be a more useful method of determining value. Gold/CRB is one way to calculate it’s real value.
My point about venetian bonds and silk is that they were at sometime in the past an outperforming asset to gold. But today we speak of gold. And we have for many centuries, off and on. Eventhough all kinds of things have come and gone from percieved value.