Metrics will never be perfect, they are an approximation of the real world. And some things are unknowable. Maybe a customer goes bankrupt 3 months into a proje

Metrics will never be perfect, they are an approximation of the real world. And some things are unknowable. Maybe a customer goes bankrupt 3 months into a project and you never collect the full revenue. One metric shows that a salesperson closed that deal and another metric shows that his revenue per customer isn't good.