Why Do Prices Differ Between Countries?
A haircut costs a few dollars in one country and forty in another. The reason is that services cannot be traded, and their price is set by local wages.
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What Is Open Source and Why It Matters
Open source means the source code is published under a licence that lets others use, modify and share it. Most of the internet runs on software built that way, usually invisibly.
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How Interest Rates Affect Everyday Life
A central bank changes one rate and the effects reach mortgages, rents, jobs and prices through a chain of borrowing costs. Each step takes time, which is why the results lag the decision.
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Why Data Centres Are Turning to Nuclear Power
Commitments to build AI computing capacity are now arriving with power agreements attached, including nuclear deals running for decades. The constraint has stopped being chips.
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Why the Industrial Revolution Started in Britain
Machines were not the cause. Britain had expensive labour and very cheap coal, which made replacing people with powered machinery pay in a way it did not elsewhere.
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What Causes Recessions?
A recession is a self-reinforcing drop in spending. One sector cuts back, incomes fall, spending falls further, and the loop continues until something interrupts it.
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How the Black Death Changed Europe
Killing a large share of the population changed the value of labour. In parts of Europe wages rose, serfdom weakened, and a society built on cheap labour had to reorganise.
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How Search Engines Rank Results
A search engine cannot search the live web. It searches a copy it built earlier, and ranking is a separate problem done with hundreds of signals rather than one formula.
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Why the Silk Road Mattered
The Silk Road was never one road. It was a shifting network of routes across Asia, and what travelled along it changed history more than the silk did.
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What Is Comparative Advantage?
A country can gain from trade even when it is worse at making everything. The reason is that what matters is not who is best, but what each side gives up.