The same explanations, narrowed to the ones with consequences — what to do about a pan fire, why a phishing email works, where the money actually goes. Read them on a quiet afternoon, not in an emergency.
Answers that can save you money, time, or a great deal of trouble
They do not target carelessness — they target context, arriving at a moment when the request they make is exactly what you were expecting.
A well-built site never stored your password in the first place — only a one-way scramble of it, which can be checked against but cannot be turned back.
Sharp corners concentrate stress into a single point, and at cruising altitude a pressurised cabin pushes hard enough on that point to tear the fuselage open.
Money you invest early spends longer earning returns on its own returns, and that compounding grows with time in a way that later contributions cannot catch up with.
The web was designed to forget you between every click, so a cookie is the note the site hands you to carry back, because it has no other way to know you are the same person.
The damage is done by a chemical your liver makes while breaking the drug down, and it destroys liver cells for a day or more before you feel anything at all.
Every write forces electrons through a thin insulating layer, and each crossing damages that insulation slightly until the cell can no longer reliably hold a charge.
Browsers run every page inside a deliberately powerless sandbox, because the alternative — letting arbitrary code from strangers touch your filesystem — would make visiting a link as dangerous as running a downloaded program.
Fire, poison, first aid — the answers you want already in your head
Electricity only flows when there is a voltage difference across something, and a bird touching one wire has both feet at the same voltage, so there is nothing to push current through it.
The oil is hotter than boiling water by hundreds of degrees, so the water flashes into steam instantly and blasts the burning oil upward and outward as a fireball.
Sharp corners concentrate stress into a single point, and at cruising altitude a pressurised cabin pushes hard enough on that point to tear the fuselage open.
Making the ends of the car fold on impact stretches the crash over a longer moment, and a longer moment means a smaller force on the people inside.
Stopping means getting rid of kinetic energy, and that energy grows with the square of speed — so twice as fast is four times as much energy to shed.
Not for grip — a smooth tyre grips a dry road better. The grooves exist to give water somewhere to go, so the tyre can still touch the road in the rain.
Carbon monoxide has no smell, no colour and no smoke, and it binds to your blood hundreds of times more readily than oxygen — so nothing you can sense tells you it is there.
The damage is done by a chemical your liver makes while breaking the drug down, and it destroys liver cells for a day or more before you feel anything at all.
Scams, passwords and privacy, explained by how they actually work
They do not target carelessness — they target context, arriving at a moment when the request they make is exactly what you were expecting.
A well-built site never stored your password in the first place — only a one-way scramble of it, which can be checked against but cannot be turned back.
The web was designed to forget you between every click, so a cookie is the note the site hands you to carry back, because it has no other way to know you are the same person.
Browsers run every page inside a deliberately powerless sandbox, because the alternative — letting arbitrary code from strangers touch your filesystem — would make visiting a link as dangerous as running a downloaded program.
Keeping ordinary things working, and knowing when they won't
Staling is starch slowly re-crystallising rather than bread drying out, and that crystallisation runs fastest at exactly the temperature a fridge holds.
Carbon monoxide has no smell, no colour and no smoke, and it binds to your blood hundreds of times more readily than oxygen — so nothing you can sense tells you it is there.
Steel and concrete get longer when they warm up, and a bridge with nowhere to put that extra length will either buckle or tear itself apart.
Every write forces electrons through a thin insulating layer, and each crossing damages that insulation slightly until the cell can no longer reliably hold a charge.
Short, complete, self-contained
Electricity only flows when there is a voltage difference across something, and a bird touching one wire has both feet at the same voltage, so there is nothing to push current through it.
The oil is hotter than boiling water by hundreds of degrees, so the water flashes into steam instantly and blasts the burning oil upward and outward as a fireball.
Making the ends of the car fold on impact stretches the crash over a longer moment, and a longer moment means a smaller force on the people inside.
Stopping means getting rid of kinetic energy, and that energy grows with the square of speed — so twice as fast is four times as much energy to shed.
Staling is starch slowly re-crystallising rather than bread drying out, and that crystallisation runs fastest at exactly the temperature a fridge holds.
Not for grip — a smooth tyre grips a dry road better. The grooves exist to give water somewhere to go, so the tyre can still touch the road in the rain.
Steel and concrete get longer when they warm up, and a bridge with nowhere to put that extra length will either buckle or tear itself apart.
No algorithm, no reason — just something unexpected
Stopping means getting rid of kinetic energy, and that energy grows with the square of speed — so twice as fast is four times as much energy to shed.
Electricity only flows when there is a voltage difference across something, and a bird touching one wire has both feet at the same voltage, so there is nothing to push current through it.
Staling is starch slowly re-crystallising rather than bread drying out, and that crystallisation runs fastest at exactly the temperature a fridge holds.
The oil is hotter than boiling water by hundreds of degrees, so the water flashes into steam instantly and blasts the burning oil upward and outward as a fireball.
Not for grip — a smooth tyre grips a dry road better. The grooves exist to give water somewhere to go, so the tyre can still touch the road in the rain.
Steel and concrete get longer when they warm up, and a bridge with nowhere to put that extra length will either buckle or tear itself apart.
Sharp corners concentrate stress into a single point, and at cruising altitude a pressurised cabin pushes hard enough on that point to tear the fuselage open.
They do not target carelessness — they target context, arriving at a moment when the request they make is exactly what you were expecting.