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Rebuttals vs. Undercutters

This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.

State

A rebuttal argues the conclusion is false; an undercutter argues the support doesn't hold — leaving the conclusion open.

Show

"The witness is lying" rebuts nothing about the defendant; it undercuts one line of support.

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Confusing them overclaims: destroying an argument for p is not establishing not-p. That confusion has its own name.