Tuesday, December 06, 2016
Metaphorical expressions can cause trouble (Hillary Price, Rhymes with Orange).
Metaphorical speech is part of our reality. We talk about "hitting the nail on the head," "things going wrong on a dime," "things can go south in a hurry," and more subtly "taking a step back" or "cooling off." These are stock phrases, and they aren't necessarily bad things to use in casual speech. In formal writing, you may wish to avoid them, or at least use them with very careful consideration, and for sure don't ever say or write something just because the cool people are saying it.
P.S.: Fun fact. I have heard that if your technical writing might go into translation, you will for probably want to avoid metaphorical expression to prevent issues for translators.