Make a reasonable judgment before the answer can shape it.
Interactive critical thinking puzzles
Make a judgment. Then inspect the model.
Each page catches one hidden assumption in the act, lets you rerun the mechanism, and gives you a sourced rule worth taking into the next discussion.
Launch collection · 5 experiences
Pick the model you trust most.
- semantic-stateMake the verdict →
Does a Progress Bar Actually Know How Much Time Is Left?
Motion can say ‘still working.’ It cannot tell you what the system knows.
- randomness-illusionMake the verdict →
How Many People Before Two Share a Birthday?
The room is small. The number of possible pairs is not.
- representationMake the verdict →
Does 0.1 + 0.2 Equal 0.3?
The decimal you typed is not always the number the machine stored.
- projection-distortionMake the verdict →
Is Greenland Really the Size of Africa?
A map can preserve local shape while destroying area comparison.
- base-rate-neglectMake the verdict →
Does Switching Doors Change Your Odds?
Two doors remain, but the host did not remove one at random.
The page contract
Not an article with a slider.
See the missing variable without a gotcha or a confidence trick.
Change one variable and reproduce the relationship yourself.
Leave with sources, a boundary, and a rule that survives outside the page.