[nesu]

This would be better if scarcity is not an issue. Carbon is abundant. Tin is not. It is even more scarce than Lithium.

[stephengillie]

So maybe we only use it for long-distance power and communications? I'm reminded of the Utopia story where, having no need of currency, they used gold for plumbing, because of its corrosion resistance.

[peterfirefly]

Which isn't scarce at all.