" means a straight-forward, simple, and direct account of the situation. It might be used so as to indicate that the response is absent any "colorful" opinions or embellishments, and rather relies on simple facts. "Black and white" as an idiom has many uses; some are as follows: a simple and certain opinion a very clear choice between two items lacking confusion or ambiguity
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DirtyGamea black-and-white perspective'black-and-white' can mean unnuanced, i.e., lacking "sensibility to, awareness of, or ability to express delicate shadings (as of meaning, feeling, or value)". (Merriam-Webster Dictionary)