The first number you see becomes a mental reference point, and your later estimates drift toward it — even when that anchor is arbitrary or completely irrelevant.
Anchoring: the first number you see becomes a reference point that pulls all your later estimates toward it — even when it's irrelevant.
Spin a wheel that lands on 65, then ask people what percentage of African nations are in the UN — they guess higher than people who watched the wheel land on 10. The wheel is random and everyone knows it. Yet the number they just saw still drags their answer.
Daniel Kahneman and Amos Tversky called this anchoring: the first value you encounter sets a reference point, and your mind adjusts from there — usually not far enough. It's why a slashed "was €200, now €80" price feels like a steal, and why the first offer in a negotiation shapes the entire range that follows.
Before you let a number land, ask: "Where did this anchor come from, and would my estimate be different without it?" Set your own reference point first — your honest target, your independent valuation — before you hear theirs. The first number isn't the true one; it's just the first.
It explains why prices, offers, and first impressions hold so much power — and gives you a way to think past the number in front of you.
Misread as "first impressions matter." Anchoring is stranger: even a clearly irrelevant or random number pulls your estimate toward it, often without your awareness. That's why it's exploited in pricing and negotiation. Defending against it means generating your own number before you hear theirs.
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