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It doesn't work because it's redunant, ancient hierarchical and traditional vision of society (medieval era, roman empire, catholic church empire) already did everything they claim to transform and revolutionize, everything they promise the peasants, but better, and it actually worked; but the commies, as we have seen time and time again, want it without the unification force of religion and of the transcendant and simply want the old model but to occupy God's place in it, so everyone sees their bs every single time and thus the people revolt against them and their killings, and their miserable failure to actually carry out their schizo secular end-times religious cycling bs to reality that are actually just endless rethorical ladders and snakes.
IN THEORY communism has all these axioms and expectations of why it works, but then it gets translated to reality and it just doesn't work, while the old model preoccupied itself from working in reality first and then making a theology about it later.
Every other answer other than this is modernism-self justification.
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