Cognitive biases: why a smart brain makes the same mistakes every time
Confirmation bias: how an honest search for the truth goes wrong
Half the reviews say the car is great, half say it is trouble. You read them all, honestly, and by midnight you are surer than ever. How does a fair search end up proving what you already believed?
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That night, Miva reads what owners say about cars like the yellow one. About half of them love their car. The other half had trouble: the gearbox, the brakes, the heater.
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By midnight, Miva is surer than ever: it is a great car. Yet she read the same reviews as anyone would. How can half good and half bad make her sure?
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