The popular version: if you show someone solid evidence that a belief they hold is wrong, they don't just resist it — they believe it even more strongly than before. Correcting someone "backfires."
What actually happened: a 2010 study found this pattern in a narrow set of conditions (strongly partisan subjects, a politically charged claim). It got a catchy name and spread everywhere. When researchers later ran much larger, more varied tests, genuine backfiring turned out to be rare. Most people — even on contested, identity-linked topics — nudge toward the correction, not away from it.
The useful takeaway isn't "facts don't work" or "never correct anyone." It's narrower and more actionable: how you deliver a correction — and whether it threatens someone's identity or just their information — determines whether it lands.