Just 15 years ago, 20 Singaporean cents can buy you a bowl of noodles. Now, what can 20 cents buy you? A small piece of candy perhaps? So does that mean the bowl of noodles increased in value despite it being the exact same thing throughout the years? Or it could simply mean that the value of the money that we have been using has dropped.
Which is no surprise, considering that we buy things with nothing but paper. A piece of paper that has little to no value, which claims that it can even buy us a plot of land. Do we not see the stark imbalance here?
The dinar and dirham (gold and silver coins) have intrinsic value - that is value that is found within the coin itself. In the time of Rasulullah SAW, one dinar could buy you a sheep. And even now, with the same one dinar, we can still buy a sheep. Why? Because the value of the coin is derived from within itself, and not from a make-believe place indoctrinated by the human mind.