Correction: The Big Lie of communism is the transition from totalitarian socialism to the undefined state of communism (via a “withering away” of the state); everything stops at totalitarian socialism, etc.
I think it goes without saying that Marx’s scientific history is an enormous fraud that ends in a totalitarian state and can never evolve to utopian communism.
The fact is that socialism itself can’t work either. Without markets, there no prices; and without prices, there is no reasonable means by which to make economic calculation.
Maybe Marx espoused the “withering away” of the state in order to try to curry support among naive Anarchists. you think that may be?