Reading 'The Amplifier' alongside the Infrastructure Series — early impressions

Just finished the first half of The Amplifier (the riskefficacy.org companion volume) and wanted to flag for anyone else picking it up: it's much more operational than the Infrastructure Series. The Infrastructure Series tells you *what* to measure and *why*; The Amplifier tells you *how* to actually run the measurement in a working organization. Useful pairing. The chapter on calibration drift over a manager's tenure is the single most uncomfortable thing I've read all year, and I worked in federal hiring for 30 years.