$1usd == $1usd is a tautology, not a price. how much you need to buy a loaf of bread is purchasing power. The price of a $1USD is always relative to another c

$1usd == $1usd is a tautology, not a price. how much you need to buy a loaf of bread is purchasing power. The price of a $1USD is always relative to another currency, you can't price it in isolation. None of these things are valuations.