How foreign the problem space is for me, and how focused much of the audience on HN seems to be on web/database software. I'm involved with the two biggest typ

How foreign the problem space is for me, and how focused much of the audience on HN seems to be on web/database software. I'm involved with the two biggest types of software in general computing: control systems and large complex commercial transactional systems. The former don't feature a UI or a database. While the latter have the primary issue of modeling a complex problem domain. That complex model is by necessity produced without regard to any particular human or system interface, or data persistence. Are such concepts so alien to audiences here?