3. How useful are more metrics? Remember that measured performance, when useful, is more effective in identifying outliers, especially poor performers or true misconduct. It is likely to be less useful in distinguishing between those in the middle or near the top of the ladder of performance. Plus, the more you measure, the greater the likelihood that the marginal costs of measuring will exceed the benefits. So, the fact that metrics is helpful doesn’t mean that more metrics is more helpful.
