This document analyzes value versus growth investing styles through the lens of Dick Mayo's dilemma at GMO about whether to continue focusing on value stocks. It provides an in-depth comparison of the two styles, discussing their different focuses, investment philosophies, risks, typical stock features, and strategies. The document also analyzes whether value investing is still the right strategy given changing economic conditions that have favored growth stocks in recent years. Calculations are shown evaluating specific stocks like Cisco, CVS, and RR Donnelley to determine if they are over or undervalued based on criteria like P/E ratio, P/B ratio, and expected long-term returns.