>>11954899gold, which was valued at $35/t.oz., was no longer used as a currency.
Logically, this means the value of gold should have depreciated.
Accounting for inflation, $35 in 1971 would be ~$240 today. Which means gold should be worth approx. $240/troy ounce.
And what is gold worth today?
$1,960/t.oz.
Scientifically speaking, what do /you/ think happened?