Move the Evidencepost

The act of changing the criteria for what counts as valid evidence after your opponent has already met the previous criteria, ensuring that you never have to concede a point. This debate tactic is beloved by conspiracy theorists, bad-faith arguers, and people who would rather perform mental gymnastics than admit they might be wrong. Moving the evidencepost is like playing a game where you get to redefine the rules after every move, guaranteeing you never lose—and also guaranteeing that no one wants to play with you anymore. The only way to win against someone who moves the evidencepost is to stop playing, which is also the only way to preserve your sanity.

Move the Evidencepost Example: "She provided a peer-reviewed study. He moved the evidencepost, saying peer review was a liberal conspiracy. She provided government data. He said the government lies. She provided photographic evidence. He said photos could be photoshopped. She asked what he would accept. He said 'personal experience.' She realized the evidencepost had moved to a dimension she couldn't reach and ended the conversation. He declared victory."

Move the Evidencepost by Abzugal Nammugal Enkigal February 15, 2026