Big Data and AI

 Today’s spotlight is on John Maynard Keynes , the British economist who revolutionized our understanding of national economies. Through his groundbreaking book, The General Theory of Employment, Interest and Money (1936), Keynes laid the foundation for modern macroeconomics . The Problem: Great Depression During the Great Depression , unemployment soared and demand collapsed. Classical economists believed markets would self-correct — but they didn’t. Keynes argued that this crisis called for a new way of thinking . Keynesian Revolution Keynes rejected the idea that supply creates its own demand (“Say’s Law”). Instead, he proposed that aggregate demand — total spending in the economy — determines output and employment. If people aren’t spending, businesses don’t produce. If businesses don’t produce, workers lose jobs. The Role of Government To break the vicious cycle of recession, Keynes recommended: Public spending to stimulate demand Monetary policies to low...