Does Coq actually run programs of any significance or do you have to extract to Ocaml, etc to get things done? SQL is certainly a practical, non-Turing-complete language. I&#x27;m with the other commenter wondering if those of you opposing Turing-completeness have a list of alternate languages that could replace what we use for systems, applications, web, etc with same productivity and efficiency. If they exist, I&#x27;ll consider using them and benchmarking. So far, I mostly see articles opposing one thing without corresponding articles with alternatives.<p>Look forward to see what you have as this is a topic I could certainly learn more about. Especially with the &quot;LANGSEC&quot; push throwing labor at it.