사회민주주의
Social democracy is criticized by other socialists because it serves to devise new means to strengthen the capitalist system which conflicts with the socialist goal of replacing capitalism with a socialist system. According to this view, social democracy fails to address the systemic issues inherent in capitalism. The American democratic socialist philosopher David Schweickart contrasts social democracy with democratic socialism by defining the former as an attempt to strengthen the welfare state and the latter as an alternative economic system to capitalism. According to Schweickart, the democratic socialist critique of social democracy is that capitalism can never be sufficiently humanised and that any attempt to suppress its economic contradictions will only cause them to emerge elsewhere. He gives the example that attempts to reduce unemployment too much would result in inflation and too much job security would erode labour discipline. In contrast to social democracy's mixed economy, democratic socialists advocate a post-capitalist economic system based on either a market economy combined with workers' self-management, or on some form of participatory, decentralized planning of the economy.