For decades, the classical school of economics operated under a comfortable delusion: the world was a clockwork mechanism governed by predictable, mathematical probability. John Maynard Keynes shattered this peace, charging that economists were acting like 'Candides'—fictional optimists who taught that 'all is for the best in the best of all possible worlds' while ignoring the storms brewing on the horizon.

The Death of the Jar

In the classical view, risk is modeled by Jacob Bernoulli’s jar. If we pull enough stones, we can deduce the proportions of black and white. But Keynes argued that real-world decisions—like the prospect of war or the price of copper in twenty years—offer no such jar. For these unique, human-driven events, there is no scientific basis to form a mathematical probability. As Keynes famously put it: "We simply do not know!"

• Laissez-faire Fallacy: The belief that markets are self-regulating relies on the assumption that agents can calculate all future risks perfectly.
• Radical Uncertainty: A state where the very structure of the future is unformed, making frequentist statistics useless.
• Strategic Intent: Unlike a random stone in a jar, human actors have intentions. The most volatile element in economics is not environmental noise, but the hidden choices of others.