"Deep Dive with Gemini," compares the classic Boglehead 60/40 investment portfolio against a higher-risk Modern Mix 40/30/30 strategy. The discussion begins by acknowledging that the bond side of the traditional 60/40 approach has recently underperformed due to rising interest rates, prompting a review of the strategy popularized by Jack Bogle, the founder of The Vanguard Group. The hosts break down the two low-cost exchange-traded funds (ETFs) that comprise the Boglehead core—VTI for stocks and BND for bonds—noting their ultra-low 0.03% expense ratios. A quantitative simulation demonstrates that while the Modern Mix (which includes gold and a high-yield single-issuer preferred stock, STRC) achieved nearly 50% more wealth over a ten-year period, it introduces  non-diversified credit risk that the Boglehead philosophy strongly rejects.