Vagueness
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A term is vague when it has borderline cases with no sharp cutoff.
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"Tall." Six-foot-four, clearly yes. Five-foot-nine — no fact of the matter settles it.
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Vague isn't meaningless. "Tall" works fine away from the borderline.