Travel
How Does Duty-Free Work, and Why It’s Cheaper
A duty-free shop sells goods that never legally entered the country, so two taxes fall away. Whether you keep the saving depends on airport rent and your home allowance.
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Business
How Do Interchange Fees Work, and Who Actually Pays
Your rewards are a share of a fee the shop paid. Debit interchange is capped by regulation, credit is not, and the difference is invisible at the terminal.
World
How Does Extradition Work, and Who Actually Decides
A court deciding somebody is extraditable does not order anyone handed over. The statute gives the surrender decision to the Secretary of State, and the word it uses is may.
Technology
Why Do Blackouts Happen, and Why a Grid Protects Itself
The picture of a grid running out of electricity is wrong. There is no tank, frequency is the live readout of the balance, and a cascade is the protection working.
Entertainment
How Does Fair Use Work, and Why Nobody Can Tell You in Advance
Every version of the rule you have heard — ten percent, thirty seconds, eight bars — is invented. The Copyright Office publishes a database of court cases instead.
Travel
How Are Plane Crashes Investigated, and Why Nobody Is Blamed
The most authoritative account of a crash is barred from the lawsuits over it. That exclusion is deliberate, and it is the reason the reports can be so direct.
World
How Does Diplomatic Immunity Work, and Where It Stops
Immunity is not one thing but four grades of it, and the remedies are political rather than judicial — which is why they look like an absence of consequences.
World
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World
How Does Extradition Work, and Who Actually Decides
A court deciding somebody is extraditable does not order anyone handed over. The statute gives the surrender decision to the Secretary of State, and the word it uses is may.
Business
All Business
Business
Who Decides If the US Is in a Recession
No government agency declares a recession. A committee of eight economists at the NBER does — and not by the two-quarters-of-GDP rule most people cite.
Technology
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Technology
How Facial Recognition Works, and Why It Gets People Wrong
A face-matching system never decides who you are — it reports how similar two faces look, and a threshold does the rest. That gap is where wrongful arrests come from.
Sports
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Sports
How Financial Fair Play Works, and Why Clubs Get Docked Points
Financial fair play is an accounting limit, not a spending cap. Here is how the £105m rule works, how a breach turns into a points deduction, and what the new squad cost ratio changes.
Travel
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Travel
Why Do Flights Get Delayed — and Who Actually Decides
The delay holding your flight is rarely the plane at the gate. It is usually a cascade from earlier in the day — or a slot assigned by a single federal facility.
Health
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Health
How Are Organs Allocated for Transplant, and Why It Isn’t a Queue
The national transplant list is not a queue. Each organ is matched by its own scoring formula, weighing urgency, compatibility and distance to do the most good.
Lifestyle
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Lifestyle
What Do Expiration Dates Mean — and Who Decides Them
Almost no US food date is required by law, and only infant formula's is about safety. Here is who sets expiration dates, what each phrase means, and why they drive so much waste.
Entertainment
All Entertainment
Entertainment
How Does Fair Use Work, and Why Nobody Can Tell You in Advance
Every version of the rule you have heard — ten percent, thirty seconds, eight bars — is invented. The Copyright Office publishes a database of court cases instead.
