Maybe those electronic monitoring bracelets contain Huawei parts that can be hacked/disabled/false signal.
Rauchen Verboten
No Smocking
We went through that lesson plan in 8th grade, which was easy to understand.
If you grow a shitload of crop in the Spring Summer, and want to trade with someone who grows a shitload of crop in Fall/Winter (or hunts, etc)….how do you keep track of what they owe you back? Something not easily forged?
Money is symbolic and allows for trade over time, as a sort of rudimentary credit.