John Maynard Keynes’ 1936 masterpiece, The General Theory of Employment, Interest and Money , didn’t just change economics—it started a revolution.
It’s the total spending in the economy that drives employment, not just the price of labor.
It introduced terms we use every day, like The Multiplier Effect and Liquidity Traps . It's the reason we look at "Aggregate Demand" to see if the economy is healthy.