He Could Calculate Gravity, but Not Human Madness

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In 1720, the British government and a company that had barely done any real business colluded to create the first modern financial bubble in human history. Most people think the South Sea Company was a trading company that simply mismanaged its operations. The truth is far more sinister. The South Sea Company was a financial engineering scam from start to finish — and the government was an accomplice.

January 1720: South Sea shares at £128. June: £500. July: £1,050. Eight-fold increase in six months.

All of London went mad. Nobles mortgaged their estates to buy shares. Widows bet their coffin money. Even London's carriage drivers were discussing how much it rose today.

Just as everyone was celebrating, one man sat at his desk at the Royal Mint and signed a buy order.

This man, thirty-three years earlier, had rewritten humanity's understanding of the universe with a single book. He calculated the moon's orbit around Earth, predicted the precise timing of solar eclipses centuries in advance, invented calculus, and used a prism to unlock the secrets of sunlight. The entire European scientific community called him "the mortal closest to God."

A few months later, he lost £20,000 — roughly $4 million in today's money.

Afterward, he said one line that became the most famous epitaph in financial history:

"I can calculate the motion of heavenly bodies, but not the madness of people."

His name was Isaac Newton.

A Genius's Three Decisions

Newton in 1720 was already seventy-seven. He was Master of the Royal Mint. This meant he understood better than any speculator on London's streets how much money was flowing in the market and where it was going. Remember this. It makes the rest of the story even more brutal.

First decision: Rational. Newton bought South Sea shares early. By April 1720, the price had roughly doubled, and he calmly sold everything. Net profit: £7,000 — about $1.4 million today. If the story ended here, Newton would have been the smartest person in the stock market. Second decision: Shaken. Over the next three months, he watched people far less intelligent than himself continue to make money. His friends were making money. His neighbors were making money. Even his servants were making money. This feeling has a name today: FOMO (Fear of Missing Out).

You think FOMO only exists in ordinary minds? No. It exists in every brain. Including the one that calculated gravity.

Third decision: Collapse. In July, near the all-time high, Newton put his entire fortune back in. Then the bubble popped. By September, South Sea shares crashed over 80%. Newton lost £20,000. Vaporized.

The Mint Master's Paradox

At the Royal Mint, Newton used a scientist's rigor to overhaul the entire British monetary system. In other words: this was a man who had used rationality to tame chaos. But he couldn't use the same rationality to tame his own greed.

If you had pulled him aside and calmly asked "is this company worth this price," he would certainly have told you "no."

He didn't lack the knowledge. He had the knowledge but couldn't keep his hands still.

That's more terrifying than "a genius getting scammed." This is "a genius knowingly walking into the fire."

An apple falls from a tree, and you can calculate its trajectory with the law of universal gravitation. But stock price movements don't obey any natural law — they obey human emotions. And human emotions are an equation that all of Newton's formulas combined cannot solve.

Apples Will Always Fall

After the South Sea Bubble burst, Britain passed the world's earliest securities regulations. The British swore: never again. Then it happened. Again and again.

1929, the Wall Street crash. 2000, the dot-com bubble. 2008, the subprime crisis. 2021, Dogecoin. Every single time, someone says five words: "This time is different." Every single time, the apple falls.

Finally

Newton's lesson isn't "don't invest." If fear of losing money keeps you permanently on the sidelines, what you miss might be more than what you'd have lost.

Newton's lesson is: your brain wasn't designed for investing.

That brain that could calculate celestial motion comes equipped with fear circuits and social comparison instincts forged by 200 million years of evolution. FOMO isn't a weakness. It's a feature. It's written in your DNA.

The question was never whether you're smart enough.

It's whether you can keep your hands still when everyone else has lost their minds.

Three hundred years ago, one of the smartest brains in human history couldn't. Can you?

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_—Kinney's Wonderland_