Speaking with negations
What is the reason that I often hear educated people (and so much of the old research material I’m using) speak using negations. Many people also advise this style of speech/writing.
I’m referring to things like “Not dissimilar from...” or “Not unfriendly...”
I can understand in some situations where a thing is not binary; if it is not A that does not mean it is B. However, I have heard it used for some things that just seem utterly stupid. I mean on the level of “The TV is not off...,” it can only be one other thing can’t it? Am I missing something?