Question

“This case is as simple as black and white.”
How is this case literally about black and white?

Answer 1

I think your question is incomplete. Is there more to it that helps explain the actual question? Either way, something being "as simple as black and white" means that it is obviously different than it is perceived due to human error (most of the time)

Step-by-step explanation:

Answer 2

I don't know which case you're talking about but it's most likely suggesting that the sides in this case are easily distinguishable.