In my continuing series on logical fallacies, this post is about a more subtle fallacy that is usually harder to catch than, say an ad hominem, and that’s the reductio ad absurdum.
What is the “Reductio ad absurdum” Fallacy?
The Latin term reductio ad absurdum literally translates to, “reduction to the absurd.” In formal logic, the reductio ad absurdum is actually a legitimate argument, but it is often applied fallaciously. The fallacy follows the idea that if the premises of someone’s argument are taken as true, then it necessarily will lead to absurd conclusions.
This is a fairly good fallacy to remember when watching courtroom drama series, as lawyers may try to use this fallacy to show that a witness is lying. For example, a witness could make a claim on the stand, such as, “I know she was driving a blue cars.”
Lawyer: “How do you…
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