Explanation: Cryptocurrency is a modern phenomenon wherein non-physical units of account not backed by any authority as legal for payment are purchased and sold under the promise that they will be worth something.
Indulgences were a medieval Catholic practice wherein non-physical units of (moral) account not backed by any authority as legal for payment are sold under the promise that they will be worth something. Namely, worth the absolution of a few sins when trying to get into heaven.
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Only exchangeable at the Pearly Gates, tbf | Spyke
Explanation: Cryptocurrency is a modern phenomenon wherein non-physical units of account not backed by any authority as legal for payment are purchased and sold under the promise that they will be worth something.
Indulgences were a medieval Catholic practice wherein non-physical units of (moral) account not backed by any authority as legal for payment are sold under the promise that they will be worth something. Namely, worth the absolution of a few sins when trying to get into heaven.