The document discusses the dangers of relying on "vanity metrics" and superficial numbers rather than actionable metrics that truly measure business success. It warns that vanity blinds companies to problems, wastes energy on appearances, and promotes dishonesty. Instead, it recommends focusing on a few key metrics that directly relate to revenue, track real customers, illustrate cause and effect, and guide the next steps. Companies should give up vanity and make their vision about more than just numbers.