Don takes listeners on a journey through nearly four decades of investment advice, explaining how his thinking evolved from recommending active mutual funds in the 1980s to embracing index funds, factor investing, and eventually ETFs. Along the way, he and Tom discuss Vanguard’s rise, Don’s early relationship with Paul Merriman, the emergence of Dimensional Fund Advisors and Avantis, and why their recommendations have changed over time. They also address listener skepticism about fund recomme...