Logical Fallacies
Logical Fallacies / Begging The Question

Begging the Question

Petitio principii presents circular arguments in which the conclusion is not include in the premises.

Example of Begging the Question

Opium is known to put people to sleep because it contains soporific properties. (This is the same as saying "Opium puts people to sleep because it has elements that put people to sleep.")

Alternative Name: Petitio Principii
This is a common fallacy.