Try to avoid using vague words like "one" or "it" to describe an issue. For example:"When I opened the document, the content was askew. When I tried to print the document, the printer jammed up.Itcannot blow up like that!"In the last sentence of this example, are you complaining about the document or the printer? It's not really clear. So I would repeat myself even at the risk of sounding redundant. It's better to be redundant and clear than to leave the other person wondering.