What Counts As Evidence?: Expert Testimony

Authority is contextual in that it comes out of a particular community setting and meets a particular need.

• A scholar speaks out of an academic discipline, with its own rules and methods.
• An official speaks out of the authority given by his/her position.
• An observer speaks out of experience.

Each level of an authority must be evaluated to know what is trustworthy and valuable.

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Authority is Constructed and Contextual (University of Washington)