Paul Tough opens by presenting research suggesting that character strengths — persistence, self-control, curiosity — predict children's long-term success and wellbeing more significantly than purely cognitive skills and academic achievement measures traditionally emphasized in education.

Why this finding challenges conventional educational assumptions:

• Traditional educational approaches have historically emphasized cognitive skill development and academic achievement measurement, potentially underweighting character strength development
• Tough's research synthesis suggests these character strengths, while harder to measure than traditional academic metrics, may matter more significantly for long-term life outcomes
• This opening establishes the book's central challenge to conventional educational priority, motivating its subsequent detailed examination of character strength development

This opening establishes the book's foundational thesis, challenging conventional educational emphasis on cognitive skills alone by highlighting character strengths' significant predictive importance for long-term outcomes.