It is not well-appreciated that the whole dollar system is destined for implosion because of the way dollars are created. The dollar is a debt instrument, there is always more owed than there are dollars in existence. It's an exponential and that only goes on so long.
I suggest episodes 1 (difference between currency and money) and 4 (how dollars are created) from the following series by Mike Maloney.
https://www.youtube.com/playlist?list=PLE88E9ICdipidHkTehs1V...