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Re:Who Pays the Price for Selling $10 Bills for $5? by Razengan on Friday April 05, 2019 @08:26AM (#19581807)
That gave me another idea which I haven't considered the implications of, but it sounds fun and video game'y:

Electronic/Smart bills, that keep track of how many times they've been used to purchase stuff with.

After a bill has been circulated N times, it increases in value by Y, and/or unlocks special artwork.

Some bills may become highly sought-after collectibles worth far more than their face value.

Would it help or harm the economy?

Re:Who Pays the Price for Selling $10 Bills for $5? by huffmsa on Friday April 05, 2019 @08:50AM (#19581983)
Well that shifts the value away from the bill being a promissory note and back to being the actually valuable item. Kind of like a commodities backed currency, which most nation's try to avoid.
Re:Who Pays the Price for Selling $10 Bills for $5? by Fjolsvith on Friday April 05, 2019 @10:36AM (#19582928)
The amazing thing about currency being actual valuable things (like precious metals or gems) is that it cannot be devalued by "printing" more of it from non-valuable things.

Nations try to avoid this because they can spend freely on a promissory note currency system. It is a recipe for disaster in the long term.