Keynes

"The postulates of the classical theory are applicable to a special case only and not to the general case." Paradigm shift.

"The postulates of the classical theory are applicable to a special case only and not to the general case." Paradigm shift. Keynes' work represents a fundamental departure from classical economic thinking. He argues that the assumptions underpinning classical economics are flawed and only applicable in specific circumstances. This radical perspective challenges long-held beliefs about how economies function. Key challenges: Rejection of Say's Law (supply creates its own demand) Questioning the idea of perfect market equilibrium Challenging the notion of wage and price flexibility Keynes proposes a new framework for understanding economic phenomena, emphasizing the role of aggregate demand and the potential for market failures. This shift in thinking laid the groundwork for modern macroeconomics and influenced economic policy for decades to come.

"Consumption – to repeat the obvious – is the sole end and object of all economic activity." Demand-driven economy. Keynes argues that the level of economic activity and employment is primarily determined by aggregate demand – the total spending in an economy. This contrasts with classical theory, which focused on supply-side factors. Components of aggregate demand: Consumption (C) Investment (I) Government spending (G) Net exports (X-M) By emphasizing the role of demand, Keynes provides a framework for understanding economic fluctuations and recessions. He suggests that insufficient aggregate demand can lead to prolonged periods of high unemployment and economic stagnation, challenging the classical notion that markets would always self-correct to full employment.

"An act of individual saving means – so to speak – a decision not to have dinner to-day. But it does not necessitate a decision to have dinner or to buy a pair of boots a week hence or a year hence or to consume any specified thing at any specified date." Saving-investment mismatch. Keynes challenges the classical assumption that savings automatically lead to investment. He argues that the decision to save and the decision to invest are made by different economic actors with different motivations. Savings: Driven by individual households' desire for future consumption Investment: Determined by businesses' expectations of future profitability This potential mismatch between savings and investment can lead to a deficiency in aggregate demand, as increased savings may not necessarily translate into increased spending or investment. Keynes suggests that this "paradox of thrift" can contribute to economic downturns and justifies government intervention to stimulate demand.

"The multiplier tells us by how much the equilibrium level of income will change as a result of a change in the level of investment." Amplified impact. Keynes introduces the concept of the multiplier effect, which explains how an initial change in spending can lead to a…