It feels as if we simply see the world as it is. We don’t. The brain interprets incoming information through memories, expectations and context, and what we experience is a reconstruction, not a recording.
Most of the time that works brilliantly. But the shortcuts that make thinking fast also make it predictably wrong in certain situations.
What is confirmation bias?
We tend to notice, favour and remember information that supports what we already believe, and to discount evidence that challenges it. It is one of the most widely documented patterns in psychology, and intelligence offers little protection: smart people are often just better at defending conclusions they already hold.
What is the availability heuristic?
Events that come to mind easily feel more common or likely than they really are. Vivid, recent or heavily reported events are easy to recall, so we overestimate them, while quiet, everyday risks fade into the background.
What is anchoring?
The first number we encounter pulls our next estimate towards it, even when that number is arbitrary. In classic experiments, an obviously random starting value still shifted people’s estimates of unrelated quantities.
How can you catch these shortcuts?
- Ask what evidence would change your mind, then look for it.
- When something feels common, ask whether it is common or just memorable.
- Before estimating, notice which number you saw first.
Your brain is powerful, but its shortcuts can mislead you. Question what feels obvious.