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The term capitalism is itself a creation of Karl Marx himself, a perennial debtor. When we allow ourselves to use their terms, we already lost.

As for centralism, this is neutral; it's what happens afterward which determines if it's good or bad. Since centralization is with us to some degree or other, I choose to see it this way: Decentralization is the lowest level possible at which centralization is allowed. Sometimes it's at the level of the individual, sometimes it's at the level of the family, or the clan, etc.