Erhard Konrad: software metrics, measurement theory, and viewpoints-critical remarks on a new approach

This paper is the reply to the paper "Erhard Konrad: Software Metrics, Measurement Theory, and Viewpoints - Critical Remarks on a New Approach", which was published in SIGPLAN Notices in March 1991. Konrad imputes that the authors of /ZUSE89/ misapply measurement theory, and confuse reality with mathematics. The statements of Konrad are wrong. It will be shown that Konrad misunderstood important concepts of measurement theory. Konrad's critical statements to our approach deny theoretical investigations of software complexity metrics. That has fatal consequences for the use of software complexity metrics in practice, to make statistics, and to calculate correlations.