Affirming a disjunct

Affirming a disjunct is a form of logical fallacy where an alternative possibility is rejected because the first is accepted, even if both are accurate. The problem with this fallacy is typically an underlying misunderstanding that establishes a false dichotomy.

Formal Construction

• A or B
• A
• Therefore, it's not B

Examples

1. Evolution
   1. Evolution is either a theory or a fact
   2. Evolution is a theory
   3. Thus, Evolution is not a fact

1. Choice of Religion
   1. Either the Muslim god is real or the Christian god is real
   2. The Christian god is real
   3. Thus, the Muslim god is not real