Confirmation Bias — The Brain Sees What It Wants
An unconscious filter collecting only information matching your beliefs
Someone who believes "I'm unlucky" remembers every bad thing but dismisses good things as "just once." Objectively, good things happened about equally.
Why It Happens
The brain likes consistency. Processing information contradicting existing beliefs requires more cognitive energy. So the brain defaults to filtering information in the direction of "confirming what I already know."
From a survival perspective, this was efficient. Questioning "this berry is dangerous" every time wastes energy. But in modern life, this filter distorts decision-making.
Where It Operates
News consumption: Subscribe only to news matching your views, dismiss opposing media as "biased."
Relationships: Once you decide "that person dislikes me," kind actions get ignored while dismissive ones get remembered.
Investing: Search only for positive news about stocks you bought, dismissing negatives as "short-term noise."
Countermeasures
You can't eliminate it completely — it's the brain's default setting. Instead, knowing the bias exists and consciously seeking counter-evidence helps.
Default to "I could be wrong": The stronger your conviction, the more you should question it.
Actively seek opposing views: Instead of 3 people who agree, listen to the argument of 1 who disagrees.
Play devil's advocate before decisions: Argue the opposite of your conclusion. If the rebuttal is weak, your conclusion is probably biased.
How to Practice
When feeling strong conviction → self-check: "could this be confirmation bias?"
Consciously search for counter-evidence
Try arguing from the position opposing your conclusion
Listen respectfully to the arguments of people with opposing views