Universal Principles Versus Particularism

Zera Yacob sought universal principles of reason and justice applicable across cultures and circumstances, rejecting claims that special traditions justified particular privileges. This philosophical stance illuminates a key distinction: index investing is fundamentally universalist—the same low-cost, diversified approach works for most investors regardless of background, wealth, or expertise. Active investing, by contrast, relies on particularism: the claim that this specific manager, this particular strategy, these unique circumstances justify departing from universal principles. Yacob would be suspicious of such claims because history shows that particularism often masks self-interest and perpetuates unjust hierarchies. Professional investors benefit when ordinary people believe that universal approaches are insufficient and that special expertise is necessary. Yacob's method demands interrogating such claims carefully. Certainly some investors have genuinely different circumstances—very large portfolios, specialized knowledge, particular constraints—that might justify active approaches. However, most investors should default to universal principles: broad diversification, low costs, and patient long-term building apply universally. The burden of proof lies with those claiming they need special treatment, not with those following universal principles grounded in reason and evidence.