The Big Three in Economics reveals the battle of ideas among the three most influential economists in world history: Adam Smith, representing laissez faire; Karl Marx, reflecting the radical socialist model; and John Maynard Keynes, symbolizing big government and the welfare state. History comes alive in this fascinating story of opposing views that continue to play a fundamental role in today's politics and economics. In the twenty-first century, Adam Smith's "invisible hand" model has gained the upper hand, and capitalism has ultimately won the ideological battle over socialism and interventionism. But even in the era of globalization and privatization, Keynesian and Marxist ideas continue to play a significant role in economic policy in the public and private sectors.