Has ever NOT constantly decreased in value relative to something that has intrinsic value like land, gold, etc. Many people take money for granted. But if you nail down exactly what it is and how it works, it can really pay off in the long run. For money to work it needs three essential elements. It has to be a unit of measure .
Money measures the value of something, whether it is tangible or intangible.
Like a yard stick measures the length of something. It has to be a medium of exchange . Something most people will accept in return for something they just gave. It makes the division of labor far more practical. It has to be a store of value .