Rhetorical Device Project

5th Period Group 5

Categorical claim

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Categorical claim

The study of relations among categories or groups of things. Categorical logic treats categorical claims.



- All men are mortal.

-Socrates is a man.

-Therefore, Socrates is mortal.

-No horned animal is a predator.

-All moose are horned animals.

-Therefore, no moose is a predator.

False Need

False Need

not true or correct; erroneous: a false statement.



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ad hominem

ad hominem

arising from or appealing to the emotions and not reason or logic.


1. Just look at this common example.

“How can you argue your case for vegetarianism when you are enjoying your steak?”

This clearly shows how a person is attacked instead of being addressed for or against his argument.

2. A classic example of ad hominem fallacy is given below:

A: “All murderers are criminals, but a thief isn’t a murderer, and so can’t be a criminal.”
B: “Well, you’re a thief and a criminal, so there goes your argument.”

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