Mayday. Mayday. Mayday.

You've heard it in every disaster movie. Every sinking ship scene. Every plane going down in flames. One word. Screamed three times. And somehow everyone in the world knows exactly what it means.

But why that word? Why not just "help"? Why not "emergency"? Why Mayday — and why three times?

In this episode Daniel figures out that the answer has been hiding in plain sight for a hundred years. And almost nobody has noticed.

Here's the first thing that will surprise you. Mayday is not an English word. It never was. It just sounds like one.

The real word is French. M'aider. It means — help me.

After World War One, air traffic between England and France exploded. Planes crossing the English Channel every day. And with more planes came more emergencies. So everyone agreed — there needed to be one universal word. One word that every pilot, every radio operator, every country would immediately recognize as a life or death situation. No confusion. No translation needed. Just — help. Now.

Ships already had SOS. But SOS was Morse code — dots and dashes tapped out over telegraph. Planes used radio. Actual voices. And over a crackling radio signal full of static and engine noise and wind, you can't tap out Morse code. You need a word. One short, clear, impossible to misunderstand word.

A radio officer at a London airport named Frederick Mockford was asked to come up with it. He was dealing with flights between England and France every day. So he wanted something both English and French speakers would instantly understand. He landed on m'aider — help me in French — because said with an English accent it came out sounding like Mayday. Clear. Simple. Unmistakable.

The year was 1923. And that one French phrase — said with an English accent — became the most recognized emergency word on the entire planet.

As for saying it three times — that's not a habit. It's an actual rule. Radio signals cut out. Static happens. If you say it once and the signal breaks up for half a second it might sound like something else entirely. Three times makes sure at least one gets through. And after Mayday there's a whole exact script — location, nature of emergency, number of people on board — that pilots and captains are trained to deliver in order, even in the middle of a crisis.

Because in a real emergency, the last thing you want is someone forgetting to say where they are.

Oh — and one more thing. Mayday has absolutely nothing to do with the month of May. Different word. Different spelling. Different origin entirely. Just a hundred years of people assuming they were connected.

Daniel's reaction to that last one is worth the listen on its own.

What you'll find in this episode:

— Why pilots needed a different distress signal than ships

— How one French phrase became a global emergency standard in 1923

— Why Mayday must be said exactly three times — and why it's a rule, not a habit

— The full script pilots follow even in the middle of a crisis

— Why Mayday has nothing to do with the month of May

— Daniel's One Big Thing — and the moment he realizes he's been wrong about this his whole life

Short, surprising, and the kind of episode that will make you hear that word completely differently the next time you catch it in a movie.

Listen, wonder, and learn.

Find us @smilewithDaniel everywhere.

Spin around ten times as fast as you can.

Stop.

Now try to walk in a straight line.

You can't. The room is moving. You're not. And your brain has absolutely no idea what's real anymore.

But why? You stopped spinning. The room never moved in the first place. So what exactly is happening inside your body that makes everything feel like it's still going?

In this episode Daniel literally spins himself dizzy before asking the question — and what they figure out together is one of those answers that makes you look at your own body completely differently.

It starts in your ear. Not the part that hears things. Much deeper than that. Inside your inner ear there are three tiny curved tubes — so small you've never thought about them — and they're filled with liquid. Floating inside that liquid are thousands of microscopic hairs. And those hairs are your body's built-in balance machine. Every time you move, the liquid moves, the hairs bend, and a message shoots straight to your brain telling it exactly which way you're going.

It's called the vestibular system. And it works perfectly.

Until you spin.

When you spin, that liquid starts swirling. The hairs bend. Your brain gets the message — we are spinning, we are spinning. All good. Makes sense.

But then you stop.

Your body stops. Your eyes stop. The room stops.

The liquid doesn't.

It keeps swirling inside those little tubes even after you're completely still. The hairs are still bending. And they're still sending that message — we are spinning, we are spinning. But your eyes are telling your brain something completely different — no we're not, everything looks still.

Two opposite messages. At exactly the same time.

Your brain can't figure out what's real. And that confusion — that's dizziness. It's not you that's dizzy. It's your liquid.

Daniel's exact words. And he's not wrong.

But then comes the question that takes the episode somewhere unexpected — if that's true, how do figure skaters spin at impossible speeds without falling over? The answer involves a technique called spotting, a brain that learns to stop panicking, and the possibility that if Daniel spins every day for long enough he might eventually stop getting dizzy altogether.

Mom's response to that last part is exactly what you'd expect.

What you'll find in this episode:

— What the vestibular system is and why it's been doing its job inside your ear this whole time without you knowing

— Why dizziness happens after you stop spinning — not while you're spinning

— How figure skaters train their brains to handle what yours can't

— Whether you could actually train yourself out of getting dizzy

— Daniel's One Big Thing — and a negotiation about spinning every day for science

Short, surprising, and the kind of episode that makes you want to immediately spin around just to think about what's happening inside your ear while you do it.

Listen, wonder, and learn.

Find us @smilewithDaniel everywhere.

Go ahead. Say something good that happened to you today.

Now knock on wood.

But wait — why did you just do that? Why does tapping your knuckles on a table have anything to do with keeping bad luck away? Who started this? And why are we all still doing it?

In this episode, Daniel asks one of those questions that turns out to have no clean answer — and that's exactly what makes it so interesting.

Here's the thing. Most people assume knocking on wood is some ancient ritual with a clear origin story. A definitive moment in history where someone decided wood meant protection. But when you actually go looking for that moment — it isn't there.

Nobody knows for sure where this came from.

Not even historians.

But there are three theories. And one of them involves a children's game that most people have never heard of — and it might be the most surprising explanation for an everyday habit you've probably had your whole life.

The oldest theory goes back thousands of years to ancient Celtic peoples who believed spirits lived inside trees. Oak trees. Ash trees. Hazel trees. If something good happened to you, you'd knock on the tree to say thank you to whatever was living inside. If you were worried something bad might happen — you'd knock to wake the spirit up and ask for help.

It's a beautiful theory. There's just one problem. Historians can't find any written evidence of it going back that far.

Because the earliest anyone ever wrote about knocking on wood — anywhere in the world — was 1805. Which isn't ancient at all. Which brings us to theory number two.

A folklorist named Steve Roud went looking for the real origin and found something unexpected. A Victorian children's game called Tiggy Touchwood. A version of tag with one special rule — if you touched something made of wood, you were completely safe. No one could tag you.

Touch wood. You're protected.

Steve Roud thinks that idea leaked out of the game and into everyday life. Adults who played it as kids kept doing it without knowing why. And eventually the game was forgotten — but the habit stayed.

Which means every time someone knocks on wood — they might just be playing a game they forgot they were playing.

Daniel's reaction to that one is worth listening for.

What you'll find in this episode:

— The ancient tree spirit theory and why historians aren't convinced

— The children's game that might explain everything

— Why the honest answer is sometimes "nobody knows" — and why that's more interesting than a clean origin story

— A third theory involving the wooden cross

— Daniel's One Big Thing — and a joke about wedding dancing that landed better than expected

Short, curious, and a little bit mysterious — for kids and the adults who never stopped wondering.

Listen, wonder, and learn.

Find us @smilewithDaniel everywhere.