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Identify the fallacy committed in the argument. All men who understand women are potentially perfect husbands. All potentially perfect husbands are men of infinite patience. Therefore, some men of infinite patience are men who understand women.

Identify the fallacy committed in the argument. All men who understand women are potentially perfect husbands. All potentially perfect husbands are men of infinite patience. Therefore, some men of infinite patience are men who understand women. Correct Answer Existential fallacy

Logical fallacies are flawed, deceptive, or false arguments that can be proven wrong with reasoning. There are two main types of fallacies:

  • A  formal fallacy is an argument with a premise and conclusion that doesn't hold up to scrutiny.
  • An informal fallacy is an error in the form, content, or context of the argument.

Important Points

  • The existential fallacy, or existential instantiation, is a formal fallacy. In the existential fallacy, one presupposes that a class has members when one is not supposed to do so; i.e., when one should not assume existential import.
  • Not to be confused with the 'Affirming the consequent', which states "A causes B; B, therefore A".
  • One example would be: "Every unicorn has a horn on its forehead".
  • It does not imply that there are any unicorns at all in the world, and thus it cannot be assumed that, if the statement were true, somewhere there is a unicorn in the world (with a horn on its forehead).
  • The statement, if assumed true, implies only that if there were any unicorns, each would definitely have a horn on its forehead.

All men who understand women are potentially perfect husbands.
All potentially perfect husbands are men of infinite patience.

Hence, this is an example of an existential fallacy.

Additional InformationTypes of fallacy are as follows-

  • The fallacy of Illicit Major: Illicit major is a formal fallacy committed in a categorical syllogism that is invalid because its major term is undistributed in the major premise but distributed in the conclusion.
  • The fallacy of Illicit Minor: Illicit minor is a formal fallacy committed in a categorical syllogism that is invalid because its minor term is undistributed in the minor premise but distributed in the conclusion.
  • The fallacy of Undistributed Middle: The fallacy of the undistributed middle (Latin: non distributio medii) is a formal fallacy that is committed when the middle term in a categorical syllogism is not distributed in either the minor premise or the major premise. It is thus a syllogistic fallacy.

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