All games
Cognitive Biases Confirmation Bias
Crack the Rule
Four cards lie on the table. Each one has a fact on the front and another on the back. A rule claims how the two sides are linked.
1Read the rule, then tap the cards you would turn over to check whether the rule is broken.
2Flip only the cards that actually need flipping — extra flips cannot help.
3When you are confident, confirm your choice to see how you did.
The concept· Peter Wason, 1960
Confirmation Bias
Confirmation bias is the tendency to search for, favour, and remember information that fits what you already believe, while overlooking evidence that would contradict it.
If you only test ideas in ways that can confirm them, you can feel completely certain and still be wrong. Real understanding requires actively hunting for disproof.