Dicto simpliciter (Lat.: I speak simply) fallacies are deductive logical fallacies that occur in statistical syllogisms. A dicto simpliciter occurs when an acceptable exception is ignored or eliminated. For instance, the appropriateness of using opiates is dependant on the presence of extreme pain. To justify the recreational use of opiates by referring to a cancer patient or to justify arresting said cancer patient by comparing him to the recreational user would be a dicto simpliciter.

There are exactly two kinds of dicto simpliciter:

• Accident -- a dicto simpliciter ad dictum secundum quid (Where an acceptable exception is ignored.)
• Converse accident -- a dicto secundum quid ad dictum simpliciter (Where an acceptable exception is eliminated or simplified.)

For inductive fallacies that may affect the soundness of some statistical syllogisms, see faulty generalization.

• Card stacking often uses dicto simpliciter.

Syllogistic fallacies

דיקטו סימפליקיטר | Dicto simpliciter