In doing so, socialist, labor, and social democratic parties contributed to -- though they were not the sole authors of -- the development of the mixed economies that exist in advanced countries today. If these mixed economies are a far cry from the centralized systems that were created in Eastern Europe under Leninist rulers, they are also very far from the classical liberal model of a self-regulating market economy. If we look to the most advanced economies for guidance, then we should not allow ourselves to be misled by dogma about "free markets."