You'd be surprised, then. Some managers don't know squat. I rolled onto a project once and found that an entire application was being delivered as a 300MB ActiveX control, to run in a browser because that was cool and "cutting-edge" at the time.

Looking at the code, I found it was using UI elements for data storage and other such nonsense. A colleague and I had to tell the manager that the entire thing had to be rewritten. I'm not sure he actually went pale, but that's how I remember it.