|Fallacy of Exclusive Premises|
Fallacy of Exclusive Premises
Exclusive premises fallacy is a formal fallacy that covers up the problem when reasoning is based on one of the three fallacies of Agrippa's trilemma. Whenever a logical fallacy is committed, the fallacy has its roots in Agrippa's trilemma. All human thought (without Divine revelation) is based on one of three unhappy possibilities. These three possibilities are infinite regress, circular reasoning, or axiomatic thinking. This problem is known as Agrippa's trilemma. Some have claimed that only logic and math can be known without Divine revelation; however, that is not true. There is no reason to trust either logic or math without Divine revelation. Science is also limited to the pragmatic because of the weakness on human reasoning, which is known as Agrippa's trilemma.
The Fallacy of Exclusive Premises occurs when a syllogism has two negative premises. Only one premise can be negative if the conclusion is negative. With two negative premises, you cannot support a negative conclusion or a positive conclusion. If both of the premises are positive, you cannot support a negative concluson. If the conclusion is positive, both premises must be positive. If the conclusion is negative, one of the premises must be negative and the other premise must be positive.
Examples of the Fallacy of Exclusive Premises
No categorical syllogism that contains two negative premises, as this one does, has sound reasoning--even if both premises and the conclusion are all true.
No categorical syllogism that contains two negative premises, as this one does, has sound reasoning.
The conclusion may be true, and the premises may be true, but the logic is not sound. In other words, by this logic, the conclusion cannot be known to be true.
Last updated: Sep, 2014
Toons & Vids
Formally Correct Fallacy / According to the Rules Fallacy (type of)
Logical Fallacy of Affirming the Consequent / Fallacy of the Undistributed Middle Term
Logical Fallacy of Commutation of Conditionals / Fallacy of the Consequent / Converting a Conditional
Logical Fallacy of Affirming a Disjunct / Fallacy of the Alternative Disjunct / False Exclusionary Disjunct / Affirming One Disjunct / Logical Fallacy of the Alternative Syllogism / Asserting an Alternative / Improper Disjunctive Syllogism / Fallacy
Logical Fallacy of Denying the Antecedent / Inverse Error / Fallacy of the Inverse / Invalid modus tollens
Logical Fallacy of Illicit Process
Logical Fallacy of Illicit Major
Logical Fallacy of Illicit Minor
Logical Fallacy of Invalid form using All
Logical Fallacy of Invalid form using "Some"
Logical Fallacy of Unwarranted Contrast / Some Are-Some Are Not
Logical Fallacy of Denying a Conjunct
Logical Fallacy of Negative Premise / Illicit Negative / Drawing a Positive Conclusion from Negative Premises
Logical Fallacy of Drawing a Negative Conclusion from Affirmative Premises / Illicit Affirmative
Logical Fallacy of Existential Instantiation / Existential Fallacy
Fallacy of Exclusive Premises
Logical Fallacy of Four Terms
Logical Fallacy of Necessity / Felacia Necassitas
Logical Fallacy of False Conversion / Illicit Conversion
Logical Fallacy of Illicit Contraposition
Formal Logical Fallacy Illicit Substitution of Identicals / Hooded Man Fallacy / Masked Man Fallacy / Intensional Fallacy / Epistemic Fallacy / Leibniz' Law Fallacy
Formal Logical Fallacy of Confusing "if" with "if and only if"
Logical Fallacy of Negating Antecedent and Consequent / Improper Transposition
Logical Fallacy of Invalid form using "OR"
Logical Fallacy of Confusion of "Necessary" with "Sufficient" Condition
Galileo Wannabe Fallacy / Galileo Argument (Formal)
Four Terms Fallacy / Quaternio Terminorum
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