The advice should not be a rule of thumb. Fortunately not every communication has for sole purpose to transmit information efficiently. Most communication inde

The advice should not be a rule of thumb. Fortunately not every communication has for sole purpose to transmit information efficiently. Most communication indeed are not an elevator pitch nor should be BLUF. Efficient writing style or communication style in general does not correlate well with an economy of signs. A certain type of communication, targeted to busy people for example, does. Should I want to extend the article to absurd limits, it could read "do not write poetry nor prose". Please DO write poetry or prose, we need it. Simply avoid it when your readers do not want or expect it (eg. at work).