Lewis Terman’s “Termites”, all of whom had IQ scores in the 99th percentile, led Terman to what conclusion?

Next, Gladwell explains a famous study involving IQ. In the years after World War I, psychology professor Lewis Terman became preoccupied with identifying individuals with remarkable intellectual gifts, as indicated by specific academic or artistic aptitudes, and by IQ. Terman identified a group of gifted students by combing through elementary school and high school data. He transformed his monitoring of these students (who came to be known as the "Termites") into a meticulously conducted long-term project. However, Gladwell expresses strong skepticism about whether Terman's focus on IQ directed Terman towards true outliers.