Affirmative conclusion from a negative premise

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Affirmative conclusion from a negative premise

The fallacy, Affirmative conclusion from a negative premise is when a positive claims is made from one or more negative premises.

For instance, the formal structure might be:

• A != B and B != C, therefore C = A

Examples

• Atheists are not good. Christians are not atheists. Thus, Christians are good.
• Evolution is not true. Intelligent design is not evolution. Therefore, Intelligent design is true.

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