December 2023

The study of the origins and development of the universe. https://youtube.com/shorts/TTvyoo-gplQ?feature=share

An argument that God exists because there must have been a first cause—that is, an ultimate reason for the universe. https://youtube.com/shorts/nZfxGWFCvyU?feature=share

The study of the origins of the universe. https://youtube.com/shorts/HDGclC8SySw?feature=share

The theory that the truth of a statement is its correspondence to facts or states of affairs. https://youtube.com/shorts/_xvfHR9qmp0?feature=share

A two-step inference involving the subalternation from the A-proposition to its corresponding I-proposition and then converting the result. Conversion by limitation is a valid inference only for the A-proposition on…

An immediate inference made by exchanging the subject and predicate terms of a categorical proposition. Conversion is a valid inference when the resulting proposition is equivalent to the original. As…

A pair of propositions that cannot both be simultaneously true but can be simultaneously false. In categorical logic, A- and E-propositions are contraries. If one is true, the other must…

A two-step inference involving the subalternation from the E-proposition to its corresponding O-proposition and then contraposing the result. Contraposition by limitation is a valid inference only for the E-proposition on…

An immediate inference made by exchanging the subject and predicate terms of a categorical proposition, and then adding the complement to the subject and predicate terms. Contraposition is a valid…

Two statements that cannot be simultaneously true or simultaneously false. In categorical logic, the A-proposition and O-proposition are contradictories, and the E- and I-propositions are contradictories. (See also A-proposition, O-proposition,…