My first reactions to the Draft are: 1. Understanding the Draft requires a knowledge of physics and mathematics beyond a usual high school education.
2. Although this level of complication may be necessary to base SI entirely on defined numerical values of fundamental constants, greatly simplified explanations will be necessary to teach SI to elementary and secondary students. 2. The historical facts of the evolution of cgs units, mks units, and mksa units into SI units belongs in appendices, as in previous editions of the Brochure, not in the main text of the Brochure. 3. The letters "SI" are a "symbol" as are s, m. K, symbols for the SI Prefixes, etc., not "abbreviations." 4. A new name and symbol for the kilogram (kg) is needed to emphasize that the kilogram is *the* coherent unit of mass in SI. Eugene Mechtly
