You may be a great facilitator, an excellent “elicitor” of requirements; your analytical skills may be second to none, but if you can’t package and present information in an easily usable form, then you’re not completing the job as a business analyst.
Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. This requires not that the writer make all his sentences short, or that he avoid all detail and treat his subjects only in outline, but that every word tell.
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system. The alternative is to have the same thing expressed in two or more places. If you change one, you have to remember to change the others… It isn’t a question of whether you’ll remember: it’s a question of when you will forget.
– A. Hunt and D. Thomas on the “DRY principle” (don’t repeat yourself) from The Pragmatic Programmer: From Journeyman to Master
I might add that the same applies for documentation! – JB