All gifted individuals are geniuses.
Stephanie is a gifted individual.
Therefore, Stephanie is a genius.
Though this syllogism is valid, it is not sound as the information was based upon subjective opinions. This statement is valid because it follows a correct form in which it includes a middle term “A” (all the gifted individuals), a predicate term “B” (geniuses), and a subject term “C” (Stephanie). It is not a true statement or sound statement as the first premise is a false claim, because not all gifted individuals are geniuses. Though many possess extraordinary traits, this does not necessarily mean all, including Stephanie, is a genius.