Definition
An Argument from Authority (or ad verecundiam) is a logical fallacy where a claim is asserted as true because an “authority” figure or institution supports it, rather than based on the merits of the evidence or logic itself.
Why It Matters
It prevents critical thinking about claims and makes people vulnerable to expert errors or manipulation. Valuing status over evidence stalls progress by discouraging the questioning of established but potentially wrong dogmas.
Core Concepts
- Expertise Overreach: The authority is cited in a field outside their area of actual expertise (e.g., a Nobel chemist advocating for megadose vitamins).
- The Nobel Disease: A specific phenomenon where Nobel laureates descend into quackery or pseudoscience later in life, using their past authority to shield unscientific claims (e.g., Linus Pauling and Vitamin C).
- Consensus vs. Authority: Distinguishing between a legitimate scientific consensus (which is an authority built on a mountain of reviewed evidence) and the opinion of a single individual.
- Authority of the Source: Any time an argument relies on the who (source) rather than the what (content), it risks becoming this fallacy.