Mechanism
Index Signals
TL;DR
Index signals are physically impossible to fake (e.g., body size, deep voice resulting from large larynx).
Index signals are physically impossible to fake (e.g., body size, deep voice resulting from large larynx). They are the most reliable signals because they are tied to physical reality.
Business Application of Index Signals
The most credible organizational signals are those that cannot be faked - tied to physical or legal reality like Vanguard's expense ratios, audited financials, or ownership structures.