Is Disjunctive Syllogism A Fallacy?
Is Disjunctive Syllogism A Fallacy? Explanation. The fallacy lies in concluding that one disjunct must be false because the other disjunct is true; in fact they may both be true because “or” is defined inclusively rather than exclusively. … Affirming the disjunct should not be confused with the valid argument known as the disjunctive syllogism.