Argument from Repetition

The Argument from Repetition, also known as Argumentum ad Nauseam, is a logical fallacy which occurs when someone attempts to convince an audience of a claim simply by repeating it multiple times, rather than providing evidence or logical reasoning. The underlying assumption is that if something is said often enough, people will begin to accept it as true.

This fallacy is commonly employed in marketing, politics, and debates. In marketing, slogans and product claims are repeated across advertisements to create a sense of truth through familiarity. In politics, candidates and their surrogates may repeat talking points relentlessly, hoping that sheer repetition will substitute for substantive argument. In debates, a participant may restate the same unsupported assertion multiple times rather than responding to counterarguments or presenting evidence.

The psychological basis for this fallacy is related to the illusory truth effect — a well-documented cognitive bias in which people are more likely to believe statements they have encountered repeatedly. However, the frequency with which a claim is stated has no bearing on its truth. A statement repeated a thousand times without supporting evidence remains just as unproven as when it was first asserted.

To guard against this fallacy, it is important to evaluate claims based on the quality of evidence and reasoning behind them, not on how often they are repeated. When you notice the same claim being made over and over without new supporting information, that is a strong signal that the argument may be relying on repetition rather than substance.