COS by SEMalytics
  • Home
  • Use Cases
  • The Science
  • Compare
  • Try Free
  • Blog
Sign in Subscribe

Measurement

Posts on B2B measurement, metrics, and the difference between proxy signals and actual goals.
A target bullseye with concentric orange rings on a cream background, with a navy arrow striking the outer ring rather than the center, representing Goodhart's Law in copy optimization.
Buyer Psychology

The Measurement Trap: Why Optimizing the Score Breaks the Thing You Were Scoring

A marketing team A/B tests subject lines, measures open rates, iterates on the winner, runs the next test. Three months in: open rates are up 22%. Reply rate is down. They optimized the score. The score broke.
02 Aug 2026 7 min read
Page 1 of 1
COS by SEMalytics © 2026
  • Sign up
  • Contact
Powered by Ghost