Argumentation Techniques

Argument from Authority

Support conclusions by citing relevant expertise and credible sources.

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What & why

What it is
A logical reasoning pattern that supports claims by citing respected experts, institutions, or authoritative sources. While this can be effective when the authority is relevant and qualified, it becomes a fallacy when the authority lacks expertise in the specific domain. Understanding this distinction helps you use credible sources effectively while avoiding weak appeals to inappropriate authorities.
Why it works

People cannot independently verify most claims, so they lean on credible sources as a shortcut, trusting expertise to stand in for evidence they lack the time or knowledge to check. A relevant, qualified authority transfers some of its standing to your claim and reduces the listener's perceived risk in agreeing. The effect holds only when the source genuinely fits the domain; audiences increasingly notice borrowed fame or mismatched credentials, and a misplaced authority can backfire, reading as a sign you lack real evidence of your own.

Before & after

Before

“Famous people say this is a good idea.”

After

“According to Harvard Business Review's 2024 study of 500 companies, organizations with diverse leadership teams outperform homogeneous teams by 35%.”

When you’ll use it

Supporting business recommendations with industry expert opinions

Citing research findings to support strategic decisions

Using thought leader insights to validate new approaches

Building credibility through appropriate expert endorsements

Pro tip

Cite specific, relevant expertise rather than general fame or popularity.

Questions & answers

What is argument from authority in business communication?

Argument from authority supports positions by citing respected experts, institutions, or leaders in the field. It leverages credible sources to strengthen arguments when direct evidence may be limited or complex.

How do I use authority arguments effectively without appealing to irrelevant experts?

Cite authorities with relevant expertise, recent experience, recognized reputation in the field, and no obvious conflicts of interest. Explain why their authority matters and connect their expertise to your specific situation.

When are authority arguments weak or inappropriate?

Authority arguments are weak when citing irrelevant experts, outdated information, biased sources, or using authority to replace rather than support logical reasoning. Authority should enhance, not substitute for, solid evidence.

Learn more

Stanford Encyclopedia of Philosophy - Fallacies
Internet Encyclopedia of Philosophy - Fallacies
Wikipedia - Argument from authority

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