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25 concepts across science, philosophy, history, psychology, and language.
Psychology
The Dunning-Kruger Effect
The less you know, the more you think you know.
Apophenia
Your brain is a pattern machine, even when there's no pattern.
The Zeigarnik Effect
Unfinished tasks haunt you. Finished ones disappear.
Cognitive Dissonance
Holding two contradictory beliefs at once produces a very specific discomfort.
The Bystander Effect
The more people witness an emergency, the less likely anyone is to help.
Pareidolia
Why you see faces in toast and animals in clouds.
Flow State
The moments when time disappears and performance peaks.
The Mandela Effect
Thousands of people share the same false memory. What does that mean?
Survivorship Bias
We study the winners and wonder why we can't replicate their success.
Learned Helplessness
Sometimes the mind gives up before the world actually does.
Confirmation Bias
Your mind is not just looking for truth. It is looking for the version of reality it already believes.
Philosophy
Sunk Cost Fallacy
Why do we keep watching bad movies we're already 20 minutes into?
Memento Mori
The Stoics kept skulls on their desks. They were onto something.
Occam's Razor
When two explanations fit the facts, something important separates them.
Liminal Space
The unease of being between what was and what will be.
The Trolley Problem
A runaway trolley. Five people. One lever. What do you do?
Tabula Rasa
Are you born as someone, or do you become someone?
The Ship of Theseus
If every part is replaced, is it still the same ship?
Veil of Ignorance
Choose rules you could accept even if you did not get to be you.
Science
The Overview Effect
Astronauts come back from space permanently changed. Why?
The Pale Blue Dot
Every human who ever lived existed on this tiny pixel.
Emergence
How do simple rules produce breathtaking complexity?
Entropy
The universe has a direction, and it only goes one way.
Regression to the Mean
The extremes are often a temporary side effect of chance.
Bayesian Inference
Beliefs should behave like probabilities. They must change when new evidence arrives.