@TylerE Yeah, and they would say they same about an aluminium ring when aluminium was rare. That definition is awfully circular and wrong, don't you think? Pe

@TylerE Yeah, and they would say they same about an aluminium ring when aluminium was rare. That definition is awfully circular and wrong, don't you think? People assign values to things based on their properties. Not because they have some magical natural number assigned to them by an invisible man in the sky.