I've found myself addressing the issue with a section at the top of documentation about the expected reader. I can get quite explicit about what the reader is e

I've found myself addressing the issue with a section at the top of documentation about the expected reader. I can get quite explicit about what the reader is expected to know, include links to relevant backgrounders, and warn that any reader who does not meet the requirements may have trouble. This way, when someone ignores the section and comes to me in incomprehension of a document they were not expected to understand, I can ask them what was unclear about the "About This Document" section. Although that's probably optimistic about how often people read documentation.