Circulus in Probando

Circular Reasoning

Closely related to Begging the Question is Circulus in Probondo (circular reasoning). This faulty logic occurs when the premise of an argument is recycled or re-worded in the argument's conclusion.

Basically, the point in contention is used to "prove" itself. Note these interesting examples below.

Example:

Students want to learn at QSI Haiphong because QSI Haiphong is where students want to learn! #GoStallions

Idiocracy (2006)

Attorney General: Brawndo's got what plants crave.

Secretary of Energy: Yeah, it's got electrolytes.

Joe: What are electrolytes? Do you even know?

Secretary of State: It's what they use to make Brawndo.

Joe: Yeah, but why do they use them to make Brawndo?

Secretary of Defense: 'Cause Brawndo's got electrolytes.

Example:

Employer: Wow, your résumé looks great! I do need another reference, though.

Applicant: My friend Hector will have good things to say about me, so I'll call him. He'll tell you.

Applicant: How do I know that Hector is trustworthy?

Applicant: Oh, I can vouch for him.

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