Tech Explained Simply

01/08/2026

BEFORE YOU CALL SOMETHING "AI," READ THIS

Everyone's suddenly an AI detective. A post reads a little too smooth and boom, "a robot wrote this." Here's the uncomfortable truth: you're wrong more often than you think, and being wrong here does real damage.
Let me start where most posts end.

THE DETECTORS ARE NOT YOUR FRIEND

Those apps that promise to catch AI writing get it wrong constantly, and they're biased. They flag genuine human work all the time, especially from people who learned English as a second language. Sit with that. Somebody writes their own honest piece, runs it through a "detector," and gets branded a cheat by a tool that just doesn't like how they write.
So whatever comes next, hold it loosely. A hunch is not proof.

NOW, THE ACTUAL TELLS

The clearest one is emptiness.
You: "The matatu was late, so I walked to Kencom and beat it there anyway."
AI: "Transportation delays can occur, and alternative options may prove more efficient."

The second is technically correct and says nothing. No name, no place, nothing you can picture. That hollow, polished feel is the strongest signal there is. Add the words it leans on, "delve, tapestry, seamless, navigate, realm," plus openers like "in today's fast-paced world," and you have a decent hunch. Nothing more.
Because here's the catch: anyone who edits their draft removes every one of these signs in five minutes. The tells only catch lazy use.

SO WHAT ARE WE EVEN DOING

Chasing AI is a losing game. The models improve every month and the tells fade with them.
The skill that lasts isn't catching the machine. It's writing with enough of your own detail and your own nerve that nobody thinks to ask. Be specific. Say what you actually believe. Put a matatu and a real place in it. No machine can fake your life.

👇 Drop a paragraph below and let's read it together. Human or machine?

24/07/2026

In my last post I showed you how to ask AI better questions.

Now the harder part: how do you know the answer is TRUE?

Here's what nobody warns you about. AI never sounds unsure. It doesn't stammer. It doesn't say "I think." It hands you a clean, confident, well-organised answer whether it knows or not.

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⚠️ WHY WE FALL FOR IT

We're wired to trust things that sound right. Good grammar. Clear structure. A calm tone.

Those signals used to mean someone knew what they were talking about.

They don't mean that anymore.

Fluency is a writing skill. It is NOT a knowledge check.

The AI is very good at the first thing—and has no idea it's failing the second.

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🎯 WHERE IT BREAKS

Not everywhere. That's what makes it dangerous. It's right often enough that you stop checking.

Four places the risk actually sits:

NUMBERS AND MATH
It runs the calculation and presents a total with total confidence. Check any figure heading into an invoice, a budget, or a business decision.

SOURCES AND CITATIONS
Ask for references and you'll get real-looking ones. Real journal. Real author. Study that doesn't exist. If you can't click it, don't cite it.

ANYTHING RECENT
Prices, who won, and what changed last month. The model learned from a snapshot of the past. It will still answer as if it read this morning's paper.

ANYTHING LOCAL
This one bites us hardest. KRA procedures, SHA coverage, county fees, and current Nairobi prices. It'll give you a confident answer built from something it half-absorbed years ago about a different country.

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⏱️ THE 30-SECOND CHECK

You don't need to verify everything. Just the parts that would cost you something if they were wrong.

Ask yourself: if this were wrong, what would happen?

""Nothing"—move on.

"I lose money, look foolish in front of a client, or make a bad decision"—check it.

Three fast ways:

1. Ask it where the claim comes from, then actually open the link.

2. Google the ONE specific fact the whole answer rests on.

3. Ask the same question again in a fresh chat. Two different answers? It was guessing both times.

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🛠️ MAKE IT EASIER TO CHECK

You can prompt for this. Add one of these to the end of your request:

"Tell me which parts of this you're least sure about."

"Separate what you know from what you're estimating."

"If you don't know, say so instead of guessing."

It won't make it perfect. It will make the soft spots visible — and that's most of the battle.

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🔑 THE PART THAT ACTUALLY MATTERS

Last post's lesson: a better prompt gets you a better answer.

Here's the correction: a better prompt gets you a better-SOUNDING answer.

Sounding better and being right are two different things, and the gap between them is where people get hurt.

So here's the rule I'd tattoo on this page:

The answer that sounds most convincing is the one you should check first.

Not because it's more likely to be wrong. Because if it is wrong, you're the least likely to notice.

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💬 What's the worst wrong answer AI has ever given you? Drop it in the comments—I want to see how bad it gets.

Share this with the person who forwarded you an AI answer as if it were a fact.

10/07/2026

You're using ChatGPT or Claude. Or Gemini. Or Copilot. But you're still getting mediocre answers.
Here's the secret nobody tells you: it's not the tool. It's how you talk to it.

THE PROBLEM
Most people type one lazy sentence and expect magic.
"Write me a resignation letter." "Help me plan a trip." "Explain inflation."
The AI answers. But it's generic. Vague. Could apply to anyone.
That's not the AI being dumb. That's you giving it nothing to work with.

THE FIX: TREAT IT LIKE A NEW EMPLOYEE, NOT A GOOGLE SEARCH
A new employee can't read your mind. They need context, specifics, and a clear idea of what "done" looks like. AI is the same.

BEFORE vs AFTER
❌ "Write me a resignation letter."
✅ "Short, professional resignation letter. Marketing coordinator, leaving after 2 years, on good terms, 3 weeks' notice. Warm but not overly emotional."
❌ "Help me plan a trip."
✅ "5-day trip to Mombasa in August, moderate budget. We like beaches, good food, and one or two cultural activities—no malls. Give me a day-by-day plan."
❌ "Explain inflation."
✅ "Explain inflation like I'm a small business owner deciding whether to raise my prices this year. Under 200 words, no jargon."
Same question. Completely different answer.

4 THINGS TO ALWAYS INCLUDE
1️⃣ Context — who you are, or your situation
2️⃣ Specifics — numbers, names, dates, constraints
3️⃣ Format — list? paragraph? word limit? say so
4️⃣ Tone — formal, casual, funny? tell it

BONUS: DO YOU NEED TO GIVE IT A ROLE?
Not always. But sometimes it changes everything.
Give it a role ("Act as a career coach" or "You're a strict editor") when you want specific expertise or voice—not just information, but a lens. If you're asking for advice, feedback, or something creative, a role sharpens the answer.
Skip it when your prompt already has strong context. If you say "explain inflation like I'm a small business owner deciding whether to raise my prices," you've basically already given it a role—no need to spell it out twice.
Quick test: does how it answers matter as much as what it says? If yes, add a role. If the content alone is well-specified, skip it.

ONE MORE TRICK
Talk to it like a conversation, not a search bar. If the first answer isn't right, don't start over:
"Make it shorter." "Too formal, make it casual." "Add a joke at the start."
Refining beats retyping.

THE REAL SECRET
The best AI users don't have the fanciest tool. They just explain themselves clearly.

👉 Try it: rewrite one vague prompt you'd normally type, using the tips above. Drop your before/after in the comments—I'll pick a few and sharpen them further.
Share this with someone who still types "help me with my essay" and wonders why the answer is generic.

30/06/2026

🤖 You picked an AI. Now what?

Last post, a bunch of you told me which one you're using. ChatGPT. Claude. Gemini. Copilot.

Good. But here's the problem.

Most people open it, type one lazy question, get an okay answer, and never go back. They're using a sports car to drive to the mailbox.

So let's fix that. Here are 5 things you can actually copy-paste in today—simply.

📧 1. THE CONFUSING EMAIL FIX

Got an email from your bank, your lawyer, or HR that sounds like a different language?

Paste it in. Say: "Explain this to me like I'm 12, and tell me if I need to do anything."

You'll understand it in 10 seconds. No more re-reading the same paragraph five times.

✍️ 2. THE BLANK PAGE KILLER

Staring at an empty document is the worst part of any task.

Tell it what you're writing, who it's for, and how long. Get a rough first draft instantly. You're not asking it to be perfect—you're asking it to give you something to react to. Editing is always easier than starting from nothing.

⚖️ 3. THE DECISION CLARIFIER

Big decision sitting on your chest? New job, big purchase, hard conversation?

Lay it out and ask for the strongest case FOR and the strongest case AGAINST—no opinion, just both sides. Seeing it laid out without your own bias clouding it is worth more than people realise.

🍽️ 4. THE "WHAT'S FOR DINNER" SOLVER

Open the fridge. Type in whatever random stuff is in there. Ask for a recipe using only those ingredients.

No more wasted food. No more 6pm panic.

🎓 5. THE PATIENT TUTOR

Trying to learn something—a language, a skill, Excel, anything?

Ask it to teach you one step at a time, and to check you understand before moving to the next part. It won't get tired of you asking the same thing twice. That's the whole point of it.

🔑 HERE'S WHAT NOBODY TELLS YOU

The difference between a useless answer and a brilliant one isn't the AI. It's how clearly you ask.

Vague question → vague answer.
Specific question, with context → genuinely useful answer.

That's the entire secret. Not a setting. Not a paid plan. Just clarity.

Pick ONE of these five. Try it today, right now, on whatever's actually in front of you.

Then come back and tell me what happened. 👇

And if this was useful—share it with someone who's still only using AI to settle arguments at the pub. 😄

14/06/2026

🤖 ChatGPT. Claude. Gemini. Copilot.

Everyone's talking about them. But what's the difference—and which one should YOU actually be using?

Let me sort this out for you. Simply.

First, they are all AI assistants.

They all do roughly the same thing: answer questions, write text, summarise documents, help you think through problems.

But they are NOT the same. Different companies built them. Different strengths. Different vibes.

Here's who made what 👇

💬 CHATGPT — Made by OpenAI

This is the one that started the wave in 2022. Most people's first experience with AI.

It's versatile. You can use it for writing, research, coding, brainstorming — almost anything. The free version is solid. The paid version (GPT-4) is noticeably smarter.

Best for: People who want to do a bit of everything.
Weakness: Sometimes it confidently tells you wrong things like it's certain. Always double-check important facts.

Try it 👉 chat.openai.com

🧠 CLAUDE — Made by Anthropic

This one doesn't get talked about enough. Claude is built by a company called Anthropic—founded by former OpenAI researchers who wanted to build AI more carefully and safely.

Claude is exceptional at reading long documents, writing in a natural human tone, and handling nuanced conversations. Give it a 50-page PDF and ask it to summarize—it handles it better than most.

Best for: Writers, researchers, anyone dealing with long documents.
Weakness: Less known, so fewer people talk about it — but those who use it tend to stick with it.

Try it 👉 claude.ai

🔵 GEMINI — Made by Google

Google was not going to sit and watch. Gemini is their answer to ChatGPT — and it comes with one big advantage nobody else has: it's connected to Google Search in real time.

That means it can tell you about things that happened yesterday. ChatGPT and Claude have a knowledge cutoff — there are things they simply don't know about yet. Gemini doesn't have that problem.

Best for: Current news, real-time research, people already deep in Google's ecosystem (Gmail, Docs, Drive).
Weakness: Still catching up on the "feels natural to talk to" part.

Try it 👉 gemini.google.com

💼 COPILOT — Made by Microsoft

Microsoft took ChatGPT's technology and built it directly into their products—Word, Excel, Outlook, and Teams. If your job involves Microsoft tools every single day, Copilot is quietly the most useful AI you're not using.

Imagine asking it to summarise 200 unread emails. Or turn your rough bullet points into a full Word report. That's what it does.

Best for: Office workers, businesses running on Microsoft 365.
Weakness: Most of the good features are behind a paid plan.

Try it 👉 copilot.microsoft.com

🔑 HERE'S WHAT NOBODY TELLS YOU

They are all tools. Just like a hammer and a screwdriver are both tools—but you don't use a hammer to tighten a screw.

Pick based on what you actually need:

✅ General use & writing → ChatGPT or Claude
✅ Current news & Google products → Gemini
✅ Office work & Microsoft apps → Copilot
✅ Long documents & deep reading → Claude

And here's the real secret — you don't have to pick just one. Most people who use AI seriously switch between two or three depending on the task.

All of them have a free version. Start there.

Which one have you tried? Drop it in the comments. 👇

And if you've been using one and want to know if you're getting the most out of it—tell me which one, and I'll do a full breakdown just on that.

Share this with someone still asking "wait, aren't they all the same thing?" 😄

14/06/2026

AI is everywhere right now — but most people still don't really know what it is.

Let me break it down for you. Simply.

🕰️ WHERE IT STARTED

The idea of machines that think goes back to 1950—a British mathematician named Alan Turing asked a question nobody had asked before: "Can machines think?"

Six years later, in 1956, a scientist called John McCarthy gathered a group of researchers at Dartmouth College in America and gave their work a proper name: "artificial intelligence."

That summer is officially where AI was born.

But for decades? It went nowhere. Computers were too slow. The results were disappointing. Funding dried up. Researchers even called it the "AI winter." Most people gave up on it.

A few didn't.

THE MOMENT EVERYTHING CHANGED

In 2012, a professor named Geoffrey Hinton proved that AI could learn to recognise images better than anyone expected—by mimicking the way the human brain works.

That cracked the door wide open.

Then in 2015, a group including Sam Altman and Elon Musk started a company called OpenAI. Their goal is to build AI that benefits everyone, not just the wealthy few.

And on November 30, 2022—ChatGPT launched.

100 million users in two months. The fastest-growing app in history. Overnight, AI stopped being a tech conversation and became everybody's conversation.

🧠 SO HOW DOES IT ACTUALLY WORK?

You know how your phone's keyboard guesses your next word?

ChatGPT does that — except it has read millions of books, articles, and conversations. When you ask it something, it doesn't "look it up." It predicts what a good answer looks like, based on everything it has ever learned.

Most of the time it gets it right.
Sometimes it confidently gets it wrong.
That's a real problem people are still working on.

WHAT IS AI DOING RIGHT NOW?

✅ Writing emails, reports, and code
✅ Helping doctors detect diseases earlier
✅ Tutoring students who can't afford tutors
✅ Translating 100+ languages instantly
✅ Running customer service 24/7

This is not the future. This is today.

WHAT DOES THIS MEAN FOR YOU?

AI is not magic. It is not going to take over the world tomorrow.

But it IS changing how we work, learn, and communicate—fast.

The people who get left behind won't be the ones who were afraid of it. They'll be the ones who never tried to understand it.

You don't need a degree. You don't need to be "a tech person."

You just need curiosity—and a free account at chat.openai.com or claude.ai.

Was this helpful? Drop a 🙋 in the comments if you want me to cover a specific tech topic next.

And share this with someone who keeps saying, "I don't understand AI." 👇

31/05/2026

From Furniture-Sized to Pocket-Sized — How Sound Systems Changed Everything 🔊

Remember when great sound meant dedicating an entire wall of your living room to it?
Times have changed. Big time.

Let's take a quick trip through audio history 👇

THE OLD DAYS
Back in the 1950s–80s, a sound system was basically a piece of furniture.
Floor-standing speakers the size of small fridges. Heavy amplifiers with chunky dials. A turntable, tape deck, and equalizer — all separate, all connected by a jungle of cables.
The sound was warm, rich, and absolutely powerful.
The catch? You weren't taking that system anywhere. It owned you.

THEN CAME THE 90s & 2000s
The CD era gave us shelf systems — one unit, two speakers, fits on a desk.
Then the iPod arrived. MP3s took over. Digital music changed everything.
Sound stopped being tied to a room. It started following you.

TODAY — SMALL SPEAKER. MASSIVE SOUND.
A Bluetooth speaker the size of a water bottle can now fill an entire room.
40 years ago, that would've taken a full rack system to pull off.
Today, a tiny chip inside your speaker automatically tunes the bass, treble, and midrange in real time. Old systems needed a separate equalizer unit just for that.

And with the latest Bluetooth technology — stronger connections, zero dropouts, and crystal clear audio. All wireless.

OLD vs NEW — THE REAL DIFFERENCE
🔹 Size → Room-filling 50+ lbs vs Palm-sized & portable
🔹 Setup → Hours of wiring vs One tap to connect
🔹 Sound → Warm & analogue vs Crisp with AI tuning
🔹 Portability → Zero vs Take it anywhere
🔹 Price → $$$$ vs $50–$500

SO WHICH IS BETTER?
Honestly? Both win in their own way.
Old hi-fi systems deliver a warmth and depth that modern speakers still struggle to fully match. That's why vinyl and hi-fi culture is making a huge comeback right now.
But modern Bluetooth speakers? Pure engineering genius. Smaller, smarter, and more affordable than ever.
The golden age of personal audio is happening right now.

Which do you prefer — old school hi-fi or modern wireless speakers? Drop your answer below!
Like & Follow Tech Explained Simply for more tech breakdowns you'll actually enjoy.

Share this with someone who still has their old speakers in the garage!

Research writer & tech enthusiast—turning questions into stories and ideas into insight.

15/05/2026

🧺 Your Washing Machine is Smarter Than You Think!
You toss in dirty clothes, press a button, and boom — clean laundry. But behind that simple action is some seriously clever engineering. Let's break it down 👇

🥁 The Drum — A Physics Trick
That spinning steel drum isn't just tumbling your clothes around. At low speed, gravity does the work. At high speed (up to 1,600 RPM!), centrifugal force flings water out through tiny holes. No squeezing, no wringing — just pure physics.

⚡ The Motor — Getting Smarter Over Time
Old machines used belt-driven motors. Modern ones use Direct Drive motors, where the drum sits directly on the motor shaft. Fewer parts, less noise, and much longer lifespan. Inverter motors also adjust speed electronically, saving you money on electricity.

🌡️ The Heater — Precision Warming
A heating coil warms the water — just like a kettle. But a tiny sensor called a thermistor monitors the temperature in real time and cuts the power the moment it hits the right level. That's how your 40°C wash stays exactly 40°C.

💧 Water Control — No Guesswork
The machine doesn't guess how much water to use. Solenoid valves (electromagnetic switches) control water flow, while a pressure sensor tells the system exactly how full the drum is — all without a float or ruler.

🧠 The Brain — Yes, It Has One
A small circuit board runs everything. It reads your laundry weight, senses how dirty the water is, and adjusts water level, temperature, and spin speed accordingly. High-end machines even use AI to detect fabric type automatically.

💡 Fun Fact: The spin cycle can generate up to 350G of force on your clothes. That's more than an F1 car cornering at full speed — and that's exactly how it removes so much water so fast!

Next time you do laundry, you'll know there's a mini engineering lab doing the hard work for you 😄

♻️ Share this with someone who loves knowing how things work!

Research writer & tech enthusiast—turning questions into stories and ideas into insight.

11/05/2026

🍫 IT WAS INVENTED BY ACCIDENT — AND NOBODY TALKS ABOUT IT

You've used your microwave over 10,000 times in your life.
But do you actually know what's happening inside it?

Most people don't. So let's fix that. 👇

📖 TRUE STORY FIRST

In 1945, an engineer named Percy Spencer was testing radar equipment when he noticed something strange.

The chocolate bar in his pocket had completely melted.

No flame. No heat source. Just invisible waves from the radar machine.

Curious, he held a bag of popcorn near the equipment.

They popped.

And just like that — the microwave oven was born.
Not from years of research.
From a melted chocolate bar in a man's pocket. 😄

📡 SO WHAT'S ACTUALLY HAPPENING INSIDE?

We've all stood in front of the microwave watching those numbers count down, thinking absolutely nothing about what's going on behind that little door.

Here's the secret.

Inside your microwave is a device called a magnetron.

Its one job → fire invisible energy waves into your food.

These waves bounce off the metal walls and hit your food from every direction.

But they don't heat your food directly.
They target something specific inside it.

💧 WATER MOLECULES ARE THE REAL HEROES

All food contains water molecules.

A water molecule has a positive end and a negative end — like a tiny magnet.

When the microwaves hit those molecules, they force them to spin and vibrate at an insane speed — billions of times per second.

That spinning creates friction.
Friction creates heat.
Heat warms your food — from the inside out.

This is completely different from a regular oven, which heats the air around your food and cooks from the outside in.

That's why your microwave reheats pasta in 2 minutes while your oven takes 20. ⏱️

🍽️ WHY DOES THE PLATE STAY COOL BUT THE FOOD GETS HOT?

Because most plates are made of glass, ceramic, or plastic — materials with very few water molecules.

Since microwaves mainly target water, the plate barely absorbs any energy.

It only feels warm because the hot food is sitting on it.

⚠️ This is also why you should NEVER put metal in a microwave.

Metal reflects the waves instead of absorbing them.
That causes sparks and can seriously damage your microwave — or start a fire.

When in doubt → take it out.

☢️ "BUT WAIT... IS MY MICROWAVE GIVING ME RADIATION?"

This is the question everyone thinks but nobody asks.
Let's settle it once and for all.

Yes — microwaves use radiation.
But radiation just means energy travelling in waves.

Visible light? Radiation.
Radio waves? Radiation.
Wi-Fi? Radiation.

The microwaves in your oven are non-ionizing — meaning they do NOT have enough energy to damage your cells or DNA.

You are completely safe. ✅

Those little dots you see on the microwave door?
That's a metal mesh designed to trap all the waves inside while it's running.

Microwaves are one of the most tested and regulated kitchen appliances in the world.

🔄 ONE LAST THING — WHY DOES IT SPIN?

Microwaves don't spread perfectly evenly inside the oven.

There are hot spots and cold spots.

The turntable spins your food so every part gets exposed to the waves more evenly.

Without it, you'd get food that's burning hot in one corner and still frozen in the middle.

(Which honestly... still happens sometimes. We've all been there. 😅)

11/05/2026

🍫 IT WAS INVENTED BY ACCIDENT — AND NOBODY TALKS ABOUT IT

You've used your microwave over 10,000 times in your life.
But do you actually know what's happening inside it?

Most people don't. So let's fix that. 👇

📖 TRUE STORY FIRST

In 1945, an engineer named Percy Spencer was testing radar equipment when he noticed something strange.

The chocolate bar in his pocket had completely melted.

No flame. No heat source. Just invisible waves from the radar machine.

Curious, he held a bag of popcorn near the equipment.

They popped.

And just like that — the microwave oven was born.
Not from years of research.
From a melted chocolate bar in a man's pocket. 😄

📡 SO WHAT'S ACTUALLY HAPPENING INSIDE?

We've all stood in front of the microwave watching those numbers count down, thinking absolutely nothing about what's going on behind that little door.

Here's the secret.

Inside your microwave is a device called a magnetron.

Its one job → fire invisible energy waves into your food.

These waves bounce off the metal walls and hit your food from every direction.

But they don't heat your food directly.
They target something specific inside it.

💧 WATER MOLECULES ARE THE REAL HEROES

All food contains water molecules.

A water molecule has a positive end and a negative end — like a tiny magnet.

When the microwaves hit those molecules, they force them to spin and vibrate at an insane speed — billions of times per second.

That spinning creates friction.
Friction creates heat.
Heat warms your food — from the inside out.

This is completely different from a regular oven, which heats the air around your food and cooks from the outside in.

That's why your microwave reheats pasta in 2 minutes while your oven takes 20. ⏱️

🍽️ WHY DOES THE PLATE STAY COOL BUT THE FOOD GETS HOT?

Because most plates are made of glass, ceramic, or plastic — materials with very few water molecules.

Since microwaves mainly target water, the plate barely absorbs any energy.

It only feels warm because the hot food is sitting on it.

⚠️ This is also why you should NEVER put metal in a microwave.

Metal reflects the waves instead of absorbing them.
That causes sparks and can seriously damage your microwave — or start a fire.

When in doubt → take it out.

☢️ "BUT WAIT... IS MY MICROWAVE GIVING ME RADIATION?"

This is the question everyone thinks but nobody asks.
Let's settle it once and for all.

Yes — microwaves use radiation.
But radiation just means energy travelling in waves.

Visible light? Radiation.
Radio waves? Radiation.
Wi-Fi? Radiation.

The microwaves in your oven are non-ionizing — meaning they do NOT have enough energy to damage your cells or DNA.

You are completely safe. ✅

Those little dots you see on the microwave door?
That's a metal mesh designed to trap all the waves inside while it's running.

Microwaves are one of the most tested and regulated kitchen appliances in the world.

🔄 ONE LAST THING — WHY DOES IT SPIN?

Microwaves don't spread perfectly evenly inside the oven.

There are hot spots and cold spots.

The turntable spins your food so every part gets exposed to the waves more evenly.

Without it, you'd get food that's burning hot in one corner and still frozen in the middle.

(Which honestly... still happens sometimes. We've all been there. 😅)

Technology really is everywhere — even in your kitchen. 💙

👇 Tag a friend who uses a microwave every day but has absolutely no idea how it works.

And drop a comment — which everyday technology should we explain next?

Tech Explained Simply