Why does Schumpeter begin his book Economic Development, which is about growth and dynamism in a capitalist system, with an economy in which there is zero growth? Question 50 options: To prove Marx's Labour Theory of Value. To determine the source of profit and accumulation in a capitalist system. To invalidate Keynes' identification of investment variability as the source of the boom-bust cycle. To demonstrate the validity of Veblen's Theory of Business Enterprise. As proof that socialism is inevitable