Michael Mauboussin explains the core of his 'Expectations Investing' approach, which involves reverse-engineering a stock's price to understand the future performance the market is pricing in, rather than building a traditional valuation model. He highlights the growing importance of intangible investments, which accounting standards fail to capture, and emphasizes focusing on cash flows. The discussion then shifts to defining and measuring competitive advantage, or 'moats', using a structured checklist, and applying this analysis to early-stage companies through the lens of real options. Mauboussin also details key decision-making tools like base rates, premortems, and red teaming to improve investment outcomes. He explores the luck-skill continuum and the paradox of skill, where as absolute skill rises, relative skill gaps narrow, making luck more important in outcomes. Finally, he offers a perspective on future market returns, suggesting they may be muted, and questions whether today's market leaders will persist, highlighting healthcare as a potentially underrepresented sector.