Why we only see what we want to see
Our minds are wired to seek out and interpret information that confirms existing beliefs, a cognitive bias that can blind us to contradictory evidence and shape our understanding of the world.
Confirmation bias is a mental shortcut where our brains favor information that supports what we already believe, often ignoring facts that challenge our views. British psychologist Peter Wason first described this in 1960, noting how people prefer to confirm their ideas rather than test them. For instance, a political supporter might only read news praising their candidate, or a doctor could overlook alternative diagnoses. This bias affects everything from investing to social media, fueling echo chambers and hindering objective learning. Even experts like scientists use peer review to combat its subtle influence.