Actually yes it is less valueable over time - because economies grow and goods become cheaper. An early pc may be about $900 in today's money. Now go further ba

Actually yes it is less valueable over time - because economies grow and goods become cheaper. An early pc may be about $900 in today's money. Now go further back to say the value of a barrel itself as cooping became more widespread. The currency in the past is a store of past value in transactions.