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Circular reasoning (Latin: circulus in probando, "circle in proving"; [1] also known as circular logic) is a logical fallacy in which the reasoner begins with what they are trying to end with. [2] Circular reasoning is not a formal logical fallacy, but a pragmatic defect in an argument whereby the premises are just as much in need of proof or ...
Closely connected with begging the question is the fallacy of circular reasoning (circulus in probando), a fallacy in which the reasoner begins with the conclusion. [26] The individual components of a circular argument can be logically valid because if the premises are true, the conclusion must be true, and does not lack relevance. However ...
Logical fallacy: A misconception resulting from incorrect reasoning in argumentation. Paradox gun : A gun that has characteristics of both (smoothbore) shotguns and rifles. Paradoxical laughter : Inappropriate laughter, often recognized as such by the laughing person.
Syllogistic fallacies – logical fallacies that occur in syllogisms. Affirmative conclusion from a negative premise (illicit negative) – a categorical syllogism has a positive conclusion, but at least one negative premise. [11] Fallacy of exclusive premises – a categorical syllogism that is invalid because both of its premises are negative ...
The Cartesian circle (also known as Arnauld's circle [1]) is an example of fallacious circular reasoning attributed to French philosopher René Descartes. He argued that the existence of God is proven by reliable perception , which is itself guaranteed by God.
[10] [11] Others, such as Curry's paradox, cannot be easily resolved by making foundational changes in a logical system. [12] Examples outside logic include the ship of Theseus from philosophy, a paradox that questions whether a ship repaired over time by replacing each and all of its wooden parts one at a time would remain the same ship. [13]
Fallacies of definition are the various ways in which definitions can fail to explain terms. The phrase is used to suggest an analogy with an informal fallacy. [1] Definitions may fail to have merit, because they are overly broad, [2] [3] [4] overly narrow, [3] [4] or incomprehensible; [4] or they use obscure or ambiguous language, [2] contain mutually exclusive parts, [3] or (perhaps most ...
In physics, circular motion is movement of an object along the circumference of a circle or rotation along a circular arc. It can be uniform, with a constant rate of rotation and constant tangential speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves the circular motion ...