Readers may know that for quite some time I have been working on topics in requirements engineering, in particular for safety requirements. They may recall previous posts here at https://abnormaldistribution.org/index.php/2010/11/09/formal-definition-of-the-notion-of-safety-requirement/ and https://abnormaldistribution.org/index.php/2010/11/09/the-parable-of-the-exploding-apples/ as well as the terminology engineering in OPRA at https://rvs-bi.de/publications/books/RVS-Bk-17-02/Ch03-OPRA.pdf and the derivation of demonstrably-relatively-complete safety requirements in Bernd Sieker’s doctoral thesis (in German) https://rvs-bi.de/publications/Theses/Dissertation_Bernd_Sieker.pdf Unfortunately, requirements analysis and engineering…