Group 1 - The article discusses the relationship between wealth, skills, and cognitive ability, emphasizing that for most ordinary people, the primary way to earn money is through selling their skills and time rather than relying solely on cognitive enhancement [8][12][24] - It highlights the societal stratification in terms of income generation, where the lowest tier sells pure time, the middle tier sells skills along with time, and the top tier engages in high-risk, high-reward activities [2][3][4] - The article suggests that many individuals mistakenly believe that enhancing their cognitive abilities will directly lead to wealth, while in reality, practical skills and the ability to sell are more crucial [17][24][25] Group 2 - The text points out that a significant number of people with high cognitive abilities still struggle financially due to a lack of practical skills or luck, indicating that cognitive enhancement alone is insufficient for financial success [12][26] - It mentions that many wealthy individuals often rely on marketing and risk-taking rather than deep knowledge, suggesting that practical experience and the ability to sell are more valuable in the marketplace [18][24] - The article concludes that for ordinary people, the best approach to achieving success is through passion and repetition, which can lead to skill improvement and increased opportunities [29][31]