Surely at issue is that we do not know how to generally handle complex problems well. Particularly those outside the domain of computing. The old fallback of f

Surely at issue is that we do not know how to generally handle complex problems well. Particularly those outside the domain of computing. The old fallback of functional decomposition into parts that can be reasoned about and developed independently, is problematic due to the need to constantly rework and extend the hierarchical decomposition as more about the domain under consideration is specified. How to predictably build a payroll system, or air-traffic control system or a much simpler (at first glance) yet inevitably complex real-world system, remains out of reach. Surely we don't worship complexity, but outside of computer science, just still don't know how to deal with it?