I agree with both things. I think communism is unlikely to be achieved by current humans. Also that quote really does not describe either the ideal of communis

I agree with both things. I think communism is unlikely to be achieved by current humans. Also that quote really does not describe either the ideal of communism nor does it describe the historical regimes under the communism brand. In fact, I think none of the 4 categories Rury described are truly correct. 1. "Monarchy/Dictatorship: Power in the hands of one, one person is authority" is wrong simply because no one ever rules alone. Monarchy is just oligarchy with extra steps. Most historical communism is here. 2. "Oligarchy/Republic: Power in the hands of a few, aristocrats are authority", equating these two is wrong because the second is supposed to have time limits and accountability. Oligarchs are aristocrats, senators are not aristocrats. 3. "Democracy: Power in the hands of many, majority is authority", democracy is much more diverse than that. 4. "Communism/Anarchy: Power in everyone's hands, everyone is equal in authority" this is anarchy not communism. And anarchy is indeed inherently unstable. There were branches of communist thought that were anarchist but by being anarchist they were doomed to failure. In practice we have only ever had variations of oligarchy that were more or less disguised and variations on democracy that were more or less direct. What has not been tried and is unlikely to be tried is a democratic communism.