Overview
The appeal to tradition, also called argumentum ad antiquitatem or appeal to common practice, is an informal logical fallacy. It asserts that a belief, practice, or policy is correct or preferable simply because it has been followed for a long time. Typical formulations are: “We have always done it this way,” or “This is right because it’s traditional.” Such claims rely on the age or persistence of a custom rather than on supporting reasons, empirical proof, or logical argumentation. For a concise framing of the fallacy in critical thinking resources, see a general fallacy guide.
Why it is fallacious
The appeal to tradition is misleading for two main reasons. First, longevity does not guarantee truth: a long-standing practice can be based on error, superstition, or incomplete information. Second, conditions change—what was sensible in one historical or cultural setting may be harmful, irrelevant, or inefficient in another. A tradition may have been adopted for pragmatic reasons (lack of alternatives) or symbolic reasons (identity or cohesion) rather than because it is actually correct.
Typical forms and contexts
Logically, the structure is simple: X has been done for a long time, therefore X is right. This pattern appears in many domains. In medicine or health, people sometimes justify a regimen with its long history rather than clinical evidence—e.g., asserting health benefits because a treatment is traditional. In cultural and social contexts, practices tied to identity or authority are defended by their antiquity. In organizational or technical settings, employees may resist innovation by invoking “the way we’ve always done it.”
Examples and clarifications
- Medical example: Saying “drinking very hot water is healthy because it has been done for centuries” treats tradition as proof rather than examining mechanisms. Traditional explanations may invoke concepts like qi in certain systems of medicine, which are cultural frameworks for health rather than the same kind of evidence used in modern clinical trials; see a discussion of qi in traditional contexts.
- Public health example: A practice might have persisted because it reduced infection risk historically when water supplies were unsafe; the original practical reason (e.g., to avoid germs) is different from asserting the practice is inherently correct. For general information on microbial risk factors historically invoked, see microbial hazards.
- Political or social example: Invoking tradition to defend a policy (for example, exclusionary or hierarchical rules) shifts attention away from arguments about fairness, effectiveness, or rights.
When tradition matters (but is not decisive)
Tradition can carry useful information. Practices that persist often do so because they worked in many contexts, carried tested heuristics, or encoded cumulative local knowledge. Cultural continuity can preserve valuable rituals, social stability, and group identity. However, these are reasons to investigate and weigh evidence—not to accept the practice uncritically. Sound evaluation asks whether the original reasons still apply and whether independent evidence supports the practice today.
How to respond to appeals to tradition
- Ask for the supporting reasons beyond age: Why was this practice adopted? What problem did it address?
- Request empirical evidence or testable predictions: Does the tradition produce the claimed results under current conditions?
- Consider changed circumstances: Has technology, environment, or knowledge altered the context that justified the practice?
- Distinguish symbolic value from instrumental value: Is the custom important for identity or cohesion even if it is not optimal for outcomes?
Notable distinctions
The appeal to tradition differs from appeals to authority (arguing something is true because an expert says so) and from appeals to popularity (argumentum ad populum, claiming correctness because many people accept it). Its opposite is the appeal to novelty, which claims something is better because it is new. Skilled reasoning recognizes that neither age nor novelty proves correctness; what matters is evidence, reasoned argument, and relevance to current aims.