Understanding the Shift in Capitalism's View

The question asks which economic theory significantly altered the perception of capitalism, moving it from a purely apologetic stance (assuming markets always self-correct and are inherently good) to a pragmatic one (acknowledging market failures and suggesting practical ways to manage the economy).

Let's look at the options:

• Competitive Market Advantage Theory: This concept relates more to business strategy and microeconomics, focusing on how firms gain an edge in the market. It doesn't fundamentally change the overall philosophical or governmental view of the capitalist system itself.
• Labour Theory of Value: While important in classical economics (like Ricardo) and central to Marxist critique, it doesn't represent a shift towards a pragmatic *management* of capitalism. Marx used it to critique capitalism's inherent contradictions and exploitative nature.
• Comparative Cost Advantage Theory: Developed by David Ricardo, this theory explains the benefits of international trade based on relative efficiencies. It is a cornerstone of classical economics and supports free trade, but it doesn't address internal issues like unemployment or recessions in a way that shifts the overall view of managing domestic capitalist economies from apologetic to pragmatic interventionism.
• General Theory of Employment, Interest and Money: Authored by John Maynard Keynes and published in 1936, this book revolutionized macroeconomic thought. It challenged the classical assumption that capitalist economies naturally tend towards full employment equilibrium. Keynes argued that aggregate demand could be insufficient, leading to prolonged periods of high unemployment and economic depression. His work provided a theoretical basis for government intervention (fiscal and monetary policy) to stabilize the economy, manage unemployment, and mitigate the severity of business cycles. This shifted the view from a passive, apologetic belief in the market's inherent stability and optimality to a pragmatic recognition that active management is sometimes necessary to ensure stability and achieve better outcomes within a capitalist framework.

Therefore, John Maynard Keynes's General Theory of Employment, Interest and Money is widely credited with changing the dominant view of capitalism from one of apologetic laissez-faire to a more pragmatic approach that accepts the need for active economic management by the state.