Aha — so that’s what it means
1035 ideas you half-knew, each unlocked by a single everyday analogy. Simple enough for a teenager, still accurate.
Science
Entropy, black holes, relativity — how the world actually works.
256 concepts
Economy
Interest rates, exchange rates, opportunity cost — the news, decoded.
261 concepts
Everyday
Dunning–Kruger, the Pareto principle — ideas worth knowing.
262 concepts
Tech
APIs, the cloud, AI — the tech you use daily, finally explained.
256 concepts
How about these today?
Sea Level Rise
Just like a heated kettle boiling over, warming temperatures cause ocean water to expand and land-based ice to pour into the sea.
ScienceValue for Time (Siseongbi)
It is the modern mindset of budgeting your limited 24 hours just as carefully as the money in your wallet.
EverydayPictographs
Humanity's first writing system, capturing the shapes of real-world objects just like a photograph.
EverydayThe Law of Conservation of Mass
Think of taking apart a Lego castle and rebuilding it into a robot—no matter how much the shape changes, the total weight of the bricks stays exactly the same.
ScienceLayer Mask
Instead of cutting a photo with scissors, it is like placing a cutout sheet of black paper over it to hide parts you do not want to see.
TechAI Agent
Instead of an encyclopedia that only answers questions, it's an all-around executive assistant that books your flights and writes full reports once given a goal.
TechWorkplace Harassment
Just like kicking an opponent behind the referee's back during a soccer match, it's the act of using one's rank or power at work to cause suffering to a coworker.
EconomyLight-Year
The cosmic ruler used instead of miles or kilometers: the distance light travels nonstop in one full year.
ScienceCompound Interest
Like rolling a snowball down a hill—the bigger it gets, the more snow it picks up with every single turn.
EconomyFraming Effect
A mental picture frame that can make the exact same artwork look like a priceless masterpiece or a cheap scribble depending on how it is presented.
EconomyDemographic Cliff
It is like a train where the crew pedaling upfront suddenly vanishes while the heavy cargo in the back keeps piling up, bringing the train to a screeching halt before a steep drop.
EverydayNetwork Interface Card
An interpreter and postal counter inside your device that translates computer data into radio waves or electrical signals for the outside world.
Tech