Cognitive Bias Cards
The quiet traps that distort good reasoning from the inside.
8 cards
Confirmation Bias
Once you believe something, you start noticing evidence that agrees with it and quietly skipping evidence that doesn't.
ViewAnchoring
The first number you see quietly becomes the number everything else gets judged against — even when it has nothing to do with actual value.
ViewOverconfidence
Feeling sure and being right are two different things — and the gap between them is usually invisible from the inside.
ViewRecency Bias
The most recent event looms largest in memory, crowding out older events that were just as important, or more.
ViewLoss Aversion
Losing something hurts roughly twice as much as gaining the same amount feels good — which quietly distorts decisions in favor of avoiding any loss at all.
ViewHerd Mentality
Reasoning changes when everyone around you is doing the same thing — the crowd's confidence quietly substitutes for your own.
ViewSunk Cost Fallacy
Money or effort already spent is gone either way — the only real question is what to do from here, not what you've already put in.
ViewHindsight Bias
Once you know how something turned out, it feels like you always knew it would — even when, at the time, it was genuinely uncertain.
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