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Edit: do any of the down-voters care to explain why this is not the case? Stable is generally considered a prerequisite of good and history indicates that not going totally down the tubes when you have a bad leader is a perquisite of stable.
Communism and authoritarianism definitely aren't synonyms by definition. Not all authoritarian countries are communist. And yes, in practice, communist countries often are authoritarian.
I would define it with marxist communism = authorian, yes.
Nobody has ever gotten to Level 2 and there are no convincing proposals on how to get there still remaining on this planet