存在謬誤

存在預設嘅謬誤（Fallacy of Existential Assumption），簡稱存在謬誤即係預設咗一個集（set）裏面嘅成員（member）存在，係 Formal Fallacy 嘅一種。

形式 [編輯]

睇 • 論 • 改 • 歷 Formal fallacies
Argument from fallacy • Fallacy of modal logic • Masked man fallacy • Appeal to probability
Fallacy of propositional logic:	Affirming a disjunct • Affirming the consequent • Commutation of Conditionals • False dilemma • Denying the antecedent • Improper Transition
Fallacy of quantificational logic:	Existential fallacy • Illicit Conversion • Quantifier shift • Unwarranted contrast
Syllogistic fallacy:	Affirmative conclusion from a negative premise • Negative conclusion from an affirmative premise • Exclusive premisses • Necessity • Four-term Fallacy • Illicit major • Illicit minor • Undistributed middle
Other types of fallacy