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Plain-English explainers on technology, finance, science, and the hidden systems running everyday life. No jargon, no fluff.
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How Self-Driving Cars Work
A self-driving car processes more data every second than a human brain handles in a day. And it still struggles with a plastic bag.
How Traffic Jams Form
Traffic jams can appear on completely clear highways with no accident, no road work, and no obvious cause, just too many cars reacting to each other, and a phenomenon that travels backward down the road like a wave.
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How 401(k)s Work
The 401(k) shifted retirement risk from employers to employees, and most people still do not understand what actually happens to the money they contribute. Here is the full picture of how these accounts work, what your employer owes you, and why the tax treatment is both the feature and the trap.
How Blood Types Work
Blood type is a classification of blood based on the presence or absence of specific molecules called antigens on the surface of red blood cells. The two most important systems are ABO and Rh, which determine whether you can safely receive a blood transfusion and whether a pregnant person might develop antibodies against their fetus.
How Derivatives Work
A derivative is a financial contract whose value rises and falls based on the price of something else. That something else could be a share price, a currency exchange rate, an interest rate, a commodity like oil or wheat, or a bond. Derivatives are used by businesses to reduce risk and by speculators to amplify it.
How Locks Work
A lock is a mechanical or electronic device that keeps a door, container, or vehicle secured until you present the correct key, code, or credential. The most common type, the pin tumbler lock, has been in use for over 150 years in nearly identical form.
How Chemistry Works
Chemistry is the study of matter: what it is made of, how it is structured, and how it changes. Everything you touch, eat, and breathe involves chemistry. The periodic table organizes all known elements, chemical reactions rearrange atoms into new combinations, and the bonds between atoms determine the properties of every material around you.
How IPOs Work
Going public is not just listing on a stock exchange. It is a carefully choreographed process designed to set a price for something that has no obvious price. Here is what actually happens.