Appeal to Authority

The reasoning error of accepting a claim as true primarily because an authority figure endorses it—rather than evaluating the evidence independently. A doctor says it, so it must be true. A CEO says it, so we should do it. A Nobel laureate says it, so it's settled. Appeal to authority is a fallacy not because authorities are always wrong but because authority is not EVIDENCE—it's a heuristic that's reliable in some contexts and unreliable in others. The key variable: is the authority's expertise RELEVANT to the specific claim? A physicist's authority on climate science is relevant; a physicist's authority on economics is not.

When to use it

When decisions are being justified by who supports them rather than by evidence; when expertise in one domain is being applied to unrelated domains; when organizational hierarchy is substituting for analytical rigor; when evaluating claims requires distinguishing between relevant and irrelevant authority.

How it can help

When an authority is cited: ask two questions. (1) Is this person's expertise relevant to THIS specific claim? (2) Is there a consensus among qualified experts, or is this one person's view? Authority in one domain doesn't transfer to other domains. A brilliant technologist's views on public health deserve no more weight than any layperson's unless they have relevant credentials. In organizations: resist the HIPPO (highest-paid person's opinion) by requiring evidence alongside authority. The most important question: 'what's the evidence?' not 'who says so?'