Part 13/17:
The conversation then shifts to a detailed exploration of intelligence. The speaker criticizes simplified questions like "What is intelligence?" noting that it's inherently a complex, multi-layered concept involving definitions, empirical measures, and practical utility.
He emphasizes the importance of psychometrics—statistical methods used to assess intelligence through tests like IQ. These tests are founded on rigorous standards of reliability (consistency across measurements) and predictive validity (their ability to forecast real-world outcomes like academic success or job performance).