This article does not cite any sources. Please help improve this articlebyadding citations to reliable sources. Unsourced material may be challenged and removed.
Find sources: "Affirmative conclusion from a negative premise" – news · newspapers · books · scholar · JSTOR (January 2024) (Learn how and when to remove this message) |
Affirmative conclusion from a negative premise (illicit negative) is a formal fallacy that is committed when a categorical syllogism has a positive conclusion and one or two negative premises.
For example:
The only thing that can be properly inferred from these premises is that some things that are not fish cannot fly, provided that dogs exist.
Or:
This could be illustrated mathematically as
It is a fallacy because any valid forms of categorical syllogism that assert a negative premise must have a negative conclusion.
This logic-related article is a stub. You can help Wikipedia by expanding it. |