College Composition / Unit 17 CMP 0405 short lesson, about 20 seconds
Expert Testimony
Captions available
The idea
Expert opinion is evidence from a professional in the field or someone whose views on the subject are respected.
In practice
A historian's judgment about a president, or a physician's about a treatment, carries authority because of the speaker's expertise.
Where people slip
Expertise is specific; a famous person speaking outside their field is not an expert witness on that subject.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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