In 1720, shares of the British South Sea Company soared. Physicist Isaac Newton made an early investment and successfully earned £7,000.

However, watching his friends around him keep getting rich, Newton—driven by desire—went all-in at the peak, chasing the rally and buying at the highest point.

Soon after, the bubble burst, and Newton nearly lost his life savings (about £20k, equivalent to several million dollars today).

Newton lamented afterward: “I can calculate the motions of the heavenly bodies, but I cannot predict the madness of people.”

High intelligence doesn’t necessarily mean high financial IQ. In investing, what’s often hardest to overcome isn’t the technical barrier, but the anxiety about missing the opportunity and emotional volatility—commonly known as FOMO

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