Why Gold Is Used As/In Currency

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Gold is relatively unreactive, but it has a low enough melting point that it could be processed easily by past civilizations. In contrast, something like platinum, which is also relatively inert chemically, has a melting point of 3,000 degrees Celsius. This made platinum almost impossible to process until relatively recently. Similarly, gold is rare in the earth’s crust, but there is enough of it to go around.

It's not inexplicable. It's not a "social construction"...

JFC, who is convincing my students that it is utterly arbitrary and the core analogy for understanding all human interactions????