A dealer in silver said, they are only worth the amount of silver that is refined into the plates. Because the price of silver had fallen, many had lost their original value. The interviewer asked a couple did they realize their plates were worth less. We like the plates. The value was dependent upon the interest.
Intelligent choice makes desires more valuable.
Not all desires are of worth. Existence theory Values have an existence of their own, independent of the valuer and his or her interests. Intrinsic values are good in and of themselves. They do not depend on something else for worth. Air Force One for many years was a Boeing 707.