From the wisdom of Old Movies:

In Viva Villa, Poncho Villa (Wallace Beery) takes Mexico City and prints up a bunch of pesos for his new government. He takes delivery of stacks of currency and then tries to pay the printer with freshly printed pesos (with a smiling Poncho on the note). The printer won’t accept it. He wants gold or dollars. Kind of sums it up.

And with carbon credits what the hell are you buying? The right to buy? These are the same people who support the right to die. Are they going to start charging for that? Before you leave this earth, we want you to pay your future taxes.