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The Ronald Opus Story
Absence of Evidence
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Paradoxes
A Collection of Short Paradoxes
Hempel’s Raven Paradox
Paradox of the 99 Foot Tall Man
Russell’s Barber Paradox
Newcomb’s Paradox
Simpson’s Paradox
The Liar Paradox
The False Positive Paradox
Hilbert’s Paradox of the Infinite Hotel
Coin Flip Paradox
Berkson’s Paradox
Logical Fallacies
The Gambler’s Fallacy
The Nicolas Cage Problem
The Linda Problem
Fallacies of Distraction
The Horrible Bosses 2 Fallacy
Hot Hand “Fallacy”
Cognitive Illusions
The Mere Exposure Effect
Denominator Neglect
The Baader-Meinhof Phenomenon
Math
Graeco-Latin Squares
From Latin Squares to Projective Planes
Geometric Magic Squares
The Mandelbrot Set
Conway’s Game of Life
The Dozenal System
Benford’s Law
Venn Diagrams
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4×4 Face Card Puzzle
Metaphorical Courtroom
The Ranking Game
What’s Wrong with this Picture?
Meeting in the Middle
Vatican Noun
The Simile Game
Creative Analogies
The Dictionary Game
Abstract Twenty Questions
String Handcuffs Puzzle
Rock Paper Scissors Lizard Spock
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Situation Puzzles
Classic Short Brain Teasers and Riddles
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Einstein’s Puzzle
The Wason Selection Task
Knights and Knaves
Hardest Logic Puzzle Ever
Prisoners and the Switch
Hat Puzzles
The Secret Word
Probability Puzzles
The Monty Hall Problem
Two Envelopes Problem
Boys and Girls Problems
The Three Card Puzzle
The Two Dice Wager
Drawing a Diamond
The Birthday Problem
Each Shuffle Is Unique
Math Puzzles
The Pirate Puzzle
Cheryl’s Birthday
Profit Percentage Puzzler
Cryptography
Secrets and Padlocks Problem
Game Theory
Truel
Unsolvable Puzzles
Seven Bridges of Königsberg Puzzle
Checkerboard and Dominoes
The 36 Officers Puzzle
Odd One Out Puzzle
Married-Unmarried Puzzle
Three Light Switches
Mirror Problems
Randomness and Patterns
Illusions
Color Illusions
Banana Optical Illusion
Lettuce Optical Illusion
Blue Eyes Optical Illusion
Chicken Coop Optical Illusion
Seahorse Color Illusion
The Dress
Which Green is Different?
Red and Green Make Yellow
3D Illusions
Chromostereopsis
Stereograms
Cross-View Stereograms
Kanizsa Illusions
Checker Shadow Illusion
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Dice of Sundry Sides
Why Name That! Is So Great
Finite Projective Planes and the Math of Spot It!
Non-Transitive Dice
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