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08 crisisIn the late 1970s, the American housing market faced a quiet crisis. If you wanted to buy a home, you went to your local savings and loan association, a…Black Swan Events and Unpredictable ImpactFor a thousand years, the Theodosian Walls of Constantinople were considered unbreakable. Think of them like a firewall that had never been hacked — not…Game TheoryPicture Paris in the early 1920s. Émile Borel, a brilliant French mathematician with a magnificent mustache, sits down to study a game of poker. Until…How to scale an app to millions of MAUImagine walking into a restaurant where the menu is fifty pages long. You feel overwhelmed. You might just order a glass of water and leave. In 2010,…How to sell anything to anybodyBefore the 1880s, selling was considered a talent you were born with — like having a good singing voice or a knack for card tricks. There was no…Roll-up investmentsYou’ve explored how roll-up investments consolidate fragmented industries. Now, let’s dive into a deal that redefined how Wall Street viewed these…SamuraiIn the late 700s, the Japanese imperial court in Nara — and then its new capital at Heian-kyō (modern Kyoto) — faced a stubborn problem. The northeastern…Semiotics — the study of signs and meaningAround 385 BCE, Plato wrote a dialogue called the Cratylus. It is one of the oldest surviving arguments about a question that still haunts language…The science of sleep — why we do it and what happens when we don'tIn 1892, a young German soldier named Hans Berger was thrown from his horse directly into the path of a heavy, horse-drawn artillery gun. Though he…What is a transistor?Before anyone had heard the word "transistor," before silicon chips ran the world, a scientist in Calcutta was doing something remarkable with crystals.…