Tech, decoded

What does "bandwidth" mean? Tech terms finally explained

Picture this: you're at dinner with family, and someone says, "Oh, it's slow because of the bandwidth—you should really set up 2FA on that account." Everyone nods. You nod too, mostly to avoid follow-up questions. Sound familiar? Here's the thing: this stuff is actually useful in today's modern life, and you do not need to be a tech expert to get it. Stick with us through these explanations, and you'll walk away with the kind of knowledge that comes in handy more often than you'd think.

Think of bandwidth like a highway. A two-lane road can only handle so many cars at once—but a twelve-lane highway? Traffic flows freely. Bandwidth works the same way: the higher your bandwidth, the more data your internet connection can handle at the same time, and the faster everything feels. It's why streaming a movie, video-calling the grandkids, and checking email all at once can slow things down.

The average American household now uses about 500 GB of data per month: roughly equal to streaming 166 full-length movies.

Encryption is the process of scrambling data into a secret code that only the intended recipient can decode. Think of it like sending a letter written in a language only you and the receiver know; even if someone intercepts it, it's gibberish to them.

Every time you shop online or log into your bank, encryption is working quietly in the background to protect your information. Military-grade encryption used for online banking would take a regular computer longer than the age of the universe to crack by brute force.

A cache is like your browser's memory for things it's seen before: When you visit a website, your device quietly saves pieces of it—images, buttons, layout—so the next time you go back, it doesn't have to download everything again from scratch. It's the digital equivalent of leaving your reading glasses on the nightstand instead of searching the whole house every morning.

If a website looks funny or outdated, someone might tell you to "clear your cache." That just means wiping that saved memory so your browser fetches a fresh version.

Latency is the tiny gap between when you do something, like saying a word on a video call, and when the other side hears it. Low latency means things feel instant and snappy. High latency means you're talking over someone on Zoom, and it takes a couple of seconds for the other person to hear it.

The human brain detects audio delay at around 20 milliseconds: about the same time it takes to blink.

An API—Application Programming Interface—sounds terrifying, but the concept is simple. Imagine you're at a restaurant. You don't go into the kitchen and cook your food; you tell the waiter what you want, and the waiter brings it back. An API does the same thing between software programs: it carries requests from one app to another and brings back the answer.

Your weather app doesn't collect its own weather data; it asks a weather service through an API.

"The cloud" sounds mysterious, but it's really just someone else's computer: a very big, very powerful one in a data center somewhere. When you save a photo to iCloud or open a Google Doc, that file isn't sitting on your device. It's stored on a server far away, and your internet connection is the bridge that lets you reach it.

The practical benefit? If you drop your phone in a lake, your photos are still safe. Fun fact: The world's cloud data centers use more electricity than the entire United Kingdom—every single day.

Phishing is when a bad actor sends you an email, text, or fake website pretending to be someone you trust, like your bank, Amazon, or the IRS, to trick you into handing over your password or credit card number. It's the digital version of a con man in a suit showing up at your door claiming to be from the gas company. The disguise looks real; the intentions are not.

If something feels off—a weird sender address, urgent scary language, a link that doesn't quite match—trust your gut and don't click.

Malware is short for "malicious software": basically, any program that sneaks onto your device to cause trouble. Some malware spies on what you type. Some lock your files and demand money to release them.

However, a reputable antivirus program and a healthy dose of caution go a long way. Don't click suspicious links. Don't plug in a random USB drive you found. Don't install software from websites you've never heard of.

An algorithm is just a set of instructions that a computer follows to make decisions or solve problems. When Facebook shows you certain posts first, or YouTube suggests a video, an algorithm made that choice. It's studying what you click, what you pause on, what you like, and using all of that to serve up more of the same. It's worth knowing this because it means your feed is a reflection of your behavior.

Want different results? Change your habits: like, comment, or search for different things, and the algorithm quietly shifts.

Two-factor authentication is like having a deadbolt in addition to your regular door lock. Even if someone gets your password, they still can't get in without a second piece of proof, usually a code sent to your phone.

Most apps make it very easy to set up, and the inconvenience is minimal compared to what it protects. Microsoft reports that accounts with 2FA enabled are over 99% less likely to be compromised.

A VPN—Virtual Private Network—is like a secret tunnel your internet traffic travels through instead of the open road. When you use one, your data is encrypted and routed through a server somewhere else, hiding your real location and making it much harder for anyone to snoop on what you're doing online.

VPNs are especially useful on public Wi-Fi, like at the airport or a coffee shop, where your connection could otherwise be visible to strangers on the same network. It's not magic, it just makes your device look like it's somewhere it isn't.

A software update is a new, improved version of a program or operating system. Updates don't just add new features; they often patch security holes that hackers have already discovered and are actively trying to exploit. Ignoring them is a bit like knowing your back door lock is broken and deciding you'll fix it next weekend.

Updating your phone or computer software takes a few minutes, and it's one of the simplest things you can do to protect yourself online.

Children who inspired legends

These 10 books for children were inspired by real-life kids

Peter Pan, Alice, Christopher Robin, and even the four March sisters have something in common: they wouldn’t exist today if real-life children hadn’t inspired 10 renowned writers to immortalize them. A restless girl on a rowboat, a 5-year-old stuck in bed with scarlet fever, or a 12-year-old with a box of watercolors and nothing to do on a rainy afternoon were some of them. Here are 10 stories of real kids behind the books we never forgot.

One day during the summer of 1862, three little girls in a rowboat helped change children's literature forever. Charles Dodgson, a young Oxford mathematician, had taken the Liddell sisters, Lorina, Alice, and Edith, on a picnic trip up the Thames. To entertain them, he improvised the tale of a girl named Alice who tumbles down a rabbit hole.

Ten-year-old Alice loved it so much that she asked him to write it down. In November 1864, he gave her a handwritten, self-illustrated manuscript. The expanded version, published in 1865 under the pen name "Lewis Carroll," became Alice's Adventures in Wonderland. In 1928, a widowed Alice sold that manuscript at auction for £15,400 (about £800,000 today), nearly four times its reserve price.

For his first birthday, Christopher Robin, A.A. Milne's son, received a teddy bear from Harrods. The family named it Edward. But later, the boy renamed it after two favorite animals: Winnie, a black bear at the London Zoo named for the Canadian city of Winnipeg, and Pooh, a swan.

Christopher had other toys, like Piglet, Eeyore, Kanga, Roo, and Tigger. His father started writing stories about them and added Owl and Rabbit from his own imagination. Winnie-the-Pooh was published in 1926, with the real boy appearing under his own name. Another sweet detail is that illustrator E.H. Shepard didn't draw Christopher's bear; he sketched his own son's teddy, Growler. The original toys have lived at the New York Public Library since 1987, all except Roo, who was lost in an apple orchard in the 1930s.

The boy who never grew up was built from five brothers who did. In 1897, Scottish playwright J.M. Barrie was walking through London's Kensington Gardens when he befriended George and Jack Llewelyn Davies, out with their nurse and baby brother Peter.

Barrie won them over by wiggling his ears and telling stories about fairies, pirates, and desert islands. Their games grew into the play Peter Pan, first staged in 1904, and a 1911 novel. The hero took baby Peter's name, though family accounts say George and a younger brother, Michael, were the main models. Wendy's brother John was named after Jack.

After both parents died, Barrie became the boys' guardian. In 1928, he confessed he had made the fictional Peter "by rubbing the five of the boys together." A year later, he gave Peter Pan's rights to London's Great Ormond Street children's hospital.

In the rainy summer of 1881, a 30-year-old Scottish writer who had never published a novel was stuck indoors in the Highland village of Braemar. His 12-year-old stepson, Lloyd Osbourne, passed the days painting with a box of watercolors, and one afternoon he was coloring the map of an imaginary island.

Robert Louis Stevenson leaned over his shoulder, added details, and started naming places: Skeleton Island, Spyglass Hill, and finally, in the corner, "Treasure Island." Within days, he was writing chapters and reading them aloud to the family each evening. The tale first ran in a children's magazine under the name "Captain George North" and became a book in 1883. Every pirate cliché since, from the X on the map to the one-legged sailor with a parrot, traces back to that holiday.

In May 1868, publisher Thomas Niles asked Louisa May Alcott for "a girls' story." In her journal, she wrote that she had never liked girls or known many, except her sisters. So she wrote about them.

Tomboyish, bookish Jo was Louisa herself. Meg was her older sister, Anna, who fell in love with her husband while acting opposite him in a play and married him in the family parlor, just like Meg. Gentle Beth was Lizzie, who caught scarlet fever from a poor family their mother had helped, as Beth does, and died in 1858. Artistic Amy was May, whose name Louisa simply rearranged. The real May illustrated the first edition of the book.

When World War II began in September 1939, a group of evacuated schoolgirls arrived at C.S. Lewis's home outside Oxford. This was probably the spark for a story about four children sent away from London to an old country house, where the youngest finds a magic wardrobe.

Lewis named that girl Lucy, after his goddaughter, Lucy Barfield, daughter of his close friend Owen. He began the book when she was 4 and finished it when she was 13. The Lion, the Witch and the Wardrobe was published in 1950 and became the first of seven Chronicles of Narnia.

The strongest girl in the world was invented by a sick 7-year-old. In the winter of 1941, Karin Lindgren was confined to bed in Stockholm with pneumonia and asked her mother, Astrid Lindgren, for a story about "Pippi Longstocking," a name she made up on the spot.

Astrid reasoned that such a strange name deserved a strange girl, and improvised the tale of a freckled, red-braided 9-year-old who lives without parents and can lift a horse with one hand. The stories became a family ritual and later, in 1944, laid up with a sprained ankle, Astrid finally wrote them down as a present for Karin's 10th birthday. Years later, Karin confessed that she identified less with Pippi than with Tommy and Annika, the well-behaved children next door.

Frances Hodgson Burnett's Little Lord Fauntleroy, about a kind-hearted American boy who learns he is heir to an English earl, was serialized in St. Nicholas magazine and published as a book in 1886.

Its hero, Cedric, was modeled on her younger son, Vivian, right down to the long curls and the velvet suits with lace collars she sewed for her boys herself. The book launched a fashion craze, and countless American boys were squeezed into "Fauntleroy suits." Vivian cut his curls by age 10, but a magazine article by his mother publicly identified him as the model. When he died in 1937, just after helping rescue four people from a capsized sailboat, the New York Times headline still called him the "Original Fauntleroy."

It all started as a get-well letter. Beatrix Potter was 27 years old in 1893, on holiday in Scotland when she wrote to Noel Moore, the 5-year-old son of her former governess, who was recovering from scarlet fever.

Unsure what to write, she decided to "tell a story about four little rabbits": Flopsy, Mopsy, Cottontail, and Peter. She illustrated it as she went, and the mischievous hero was inspired by her own pet rabbit, Peter Piper. In 1900, Noel's mother suggested that Potter's picture letters could become books. Publishers turned the story down, so in 1901 Potter printed 250 copies herself. The following year, Frederick Warne, one of the firms that had rejected her, published The Tale of Peter Rabbit in color. It has never been out of print since.

In 1940, Life magazine ran a strip of four photos of a small boy in Liberty County, Georgia, waiting nervously for a blood test. A 24-year-old artist named Ezra Jack Keats cut them out and pinned them above his desk. He later recalled being captivated by the boy's face, his posture, even the way he wore his clothes.

Keats never learned the real boy's name, but the photos stayed with him for more than two decades. When Keats finally wrote and illustrated a book of his own, that boy became Peter, who wanders his city neighborhood after the first snowfall. The Snowy Day (1962) was built from cut paper, handmade stamps, and spattered ink, and in 1963 it became the first Caldecott Medal winner with an African American child as its hero. The book, however, went on to become the most checked-out title in New York Public Library history.