What is more valuable, a plastic ring from a Cracker Jacks box or a gold wedding band?An REI tent or a 3-bedroom house?
A sweater from the Salvation Army or from Nordstroms?
An heirloom rose or a fern?
Gold is not valuable in itself. It is valuable because there is so little of it. If sand were found only in small quantities, people would treasure it in their safe-deposit boxes; they would buy sand certificates, on important occasions they would exchange a little sand, and they would have the expression "as good as sand."
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