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'''Circular reasoning''' is a form of [[Logical fallacy#Proof by assertion|proof by assertion]], often used by [[Atheist|Atheists]] and [[evolutionist]]s in which one uses a conclusion of an argument as a [[premise]] to that same argument, that is, ending where it began. This is also known as ''petitio principii'' or ''begging the question.''
'''Circular reasoning''' is a form of [[Logical fallacy#Proof by assertion|proof by assertion]], often used by [[Atheist|Atheists]] and [[evolutionist]]s in which one uses a conclusion of an argument as a [[premise]] to that same argument, that is, ending where it began. This is also known as ''petitio principii'' or ''begging the question.''
Every logical system ''must'' begin with a set of generally accepted assumptions called ''postulates'' or ''axioms'' (from the [[Greek]] '''αξιος''' or ''axios'' worthy or deserving). Similarly, any set of definitions must start with a set of fundamental terms that need no definition. An axiom is usually a fundamental property of nature upon which all agree. Persons attempting to show that something is a fundamental property of nature when it is not, or a value of that property that is contrary to fact, typically use circular reasoning to make such an attempt.
Every logical system ''must'' begin with a set of generally accepted assumptions called ''postulates'' or ''axioms'' (from the [[Greek]] '''αξιος''' or ''axios'' worthy or deserving). Similarly, any set of definitions must start with a set of fundamental terms that need no definition. An axiom is usually a fundamental property of nature upon which all agree. Persons attempting to show that something is a fundamental property of nature when it is not, or a value of that property that is contrary to fact, typically use circular reasoning to make such an attempt.
==Begging the question==
'''Begging the question''' is a form of circular reasoning in which a claim is automatically assumed to be true without evidence other than the statement or claim itself. The phrase is commonly confused with "raising the question," an error that has gained traction through incorrect popular usage.<ref>http://www.worldwidewords.org/qa/qa-beg1.htm</ref>
==Examples==
==Examples==
*Atheists use circular logic to "disprove" the existence of [[God]]. That is, they presuppose that God does not exist and then argue that all proofs for the existence of God must be flawed because He does not exist. Christians can use [[presuppositional apologetics]] to break the circle of the atheists' circular reasoning.
*Atheists use circular logic to "disprove" the existence of [[God]]. That is, they presuppose that God does not exist and then argue that all proofs for the existence of God must be flawed because He does not exist. Christians can use [[presuppositional apologetics]] to break the circle of the atheists' circular reasoning.
*[[Muslim]]s also use circular logic to defend the [[Qur'an]]. They argue that the Qur'an is true because it is the Word of [[Allah]], that it is the Word of Allah because it says so, and that we can rely on it because it is true. This is '''completely''' [[Biblical scientific foreknowledge |different]] from why the [[Bible]] is true.
*[[Muslim]]s also use circular logic to defend the [[Qur'an]]. They argue that the Qur'an is true because it is the Word of [[Allah]], that it is the Word of Allah because it says so, and that we can rely on it because it is true. This is '''completely''' [[Biblical scientific foreknowledge |different]] from why the [[Bible]] is true.
*[[Evolutionist]]s will claim that a fossil is millions of years old because that is the date given by [[radiometric dating]]; then state that it is reliable because they "know" that the fossil is millions of years old due to the [[strata]] in which it was found; additionally because the radiometric dating methods agree with each other, and date correctly materials which were historically dated by humans.
*[[Evolutionist]]s will claim that a fossil is millions of years old because that is the date given by [[radiometric dating]]; then state that it is reliable because they "know" that the fossil is millions of years old due to the [[strata]] in which it was found; additionally because the radiometric dating methods agree with each other, and date correctly materials which were historically dated by humans.
*"If such actions were not illegal, then they would not be prohibited by the law."
*Person 1:"He is very ugly."
:Person 2: Why do you say that?"
:Person 1: "Because he is so unattractive."
==See also==
==See also==
*[[No true Scotsman]], a specific example of circular reasoning
*[[No true Scotsman]], a specific example of circular reasoning
== Reference ==
== Reference ==
<references/>
* [http://creationwiki.org/Circular_reasoning Circular reasoning] by [[CreationWiki]]
* [http://creationwiki.org/Circular_reasoning Circular reasoning] by [[CreationWiki]]
[[Category:Logical Fallacies]]
[[Category:Logical Fallacies]]
[[Category:Liberal Traits]]
[[Category:Liberal Traits]]