Well, gee, although it can get time consuming occasionally, when things go missing, I had BETTER know if it went into or out of my boss's office or not. Plus it's helpful when people call later looking for a status on documents.
That works if the documents come through a boss's PA, what happens when the system gets by-passed?
That's why I favour electronic document managements systems - the only people involved are those on the project or those who are responsible for sign-off.