Like many others, I suppose, I sometimes forget that just because I am familiar with something (a piece 
Hmm. Seems kinda obvious to me...of software, a workaround, a report -- whatever) doesn't mean that everyone else is. And they're not going to tell you that they don't know something for one very simple reason -- people don't know what they don't know!
About a year ago I explored this issue, and suggested ways to deal with it, in an article entitled The art of stating the obvious. Click the link to read the article now.