To the Man With a Hammer Everything Looks Like a Nail
An engineer at a company once called me and asked me how much it would cost to edit a Service Manual that he had written for a medical device. I asked him to send it to me so that I could give him a quote. When I received it I saw to my amazement and horror that he had written a 200 page manual (including many graphics) in Excel. When I asked him why he didn't use Word, he replied 'I'm an engineer I know how to use Excel, not Word.'
Hurwitz, Charles. Freelance Technical Writing in Israel (2009). Articles>Documentation>Freelance>Software