ACT Preparation / Unit 21 ACT 2009 short lesson, about 20 seconds
Evidence That Weakens a Claim
Captions available
The idea
Evidence weakens a claim when it contradicts what the claim predicts. A single well-measured contradiction can outweigh several results that merely fit.
In practice
Finding healthy fish in the warmest pond weakens a claim that warmth alone harms them.
Where people slip
Check that the contradicting evidence was measured under the conditions the claim describes.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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