We like to think we decide with logic. In reality, a handful of mental shortcuts
run the show — and most of the time we never notice them.
1. Anchoring Bias
The first number you see becomes the reference point for everything after it.
Sellers know this, which is why the “original price” is always shown next to the
discount.
2. Confirmation Bias
Once we believe something, we hunt for evidence that proves us right and quietly
ignore everything that doesn’t.
3. Sunk Cost Fallacy
We keep pouring resources into a losing decision because of what we’ve already
spent, instead of judging it on what it will return from here.
Counter Each One
- Anchoring: Set your own number before you look at theirs.
- Confirmation: Actively search for the strongest case against your view.
- Sunk cost: Ask, “Would I start this today, knowing what I know now?”
Small guardrails, big difference.



