You are presuming that the economic-configuration would be the same..
That isn't correct.
The Deep South's slaves weren't allowed any economic-autonomy, were they?
We'd be mere-property. mere-slaves, no rights, & just mowing-us-down-with-bullets if we protested, if it got far enough.
You know, the way communist dictators mow-down their own farmers/food-producers ( Stalin ), or their own intelligentsia ( Mao ), or the way fascist dictators mow-down the woke.
Most currence is mere-leverage, & with that-fake an economy, they can certainly come-up-with something that locks us out.
Trumpcoin, e.g: either you use trumpcoin XOR you're ICE'd, if you see what I mean..
If they have to manufacture criminality, in order to "justify" some more "enforcement", well, for bullies, that's called entertainment, right?
the economic-phase/paradigm we're currently-in is only 1 phase of many.
The barter-system the Indigenous peoples ( who hadn't come-up-with a currency of any kind ) works, for low-intensity economies..
the "economy" that functioned in the nazi concentration-camps ( people traded for pieces-of-paper, or cigarettes, etc ), or in prisons, is an economy..
Underground-economy's likely to be present in nearly-all economies, especially the ones rooted in class-based-validity..
( in the academic-class-system associating-with-an-important-name is a kind of "currency" )
The intent is total-segregation-of-privilege-&-power to them, from all-others.
Why should they care if the all-others part doesn't work, or isn't sustainable?
So long as it works until they die, .. they won, right?
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