The transplant registry guidelines don't play in the gray for a reason
Is 'The transplant registry guidelines don't play in the gray for a reason' the same meaning with 'there is no exception in the transplant registry guidelines'?
Solution 1:
Not exactly. Although the "The transplant registry guidelines don't play in the gray" part is indeed a creative (if a little callous) way to say "there is no exception in the transplant registry guidelines", there's still that "for a reason" part.
In the gray is a recent-ish English idiom, an extension of the older "black/white" analogy for a strict duality. The term "gray/grey area" to mean ambiguity first appears in Google Books in the late 1940's. If there is a "gray" between black and white, it suggests that a question might have an answer of "maybe" instead of just "yes" or "no".
Suggesting that guidelines "play" is an unwarranted personification. It's callous and a little disingenuous. It's suggesting that the guidelines are acting on their own to decide who gets a transplant and who doesn't, and downplaying the fact that people make those decisions, people with their own unconscious impulses and biases.
Finally there's that "for a reason" part. This goes beyond the lack of compromise in the guidelines. The speaker is telling you that that lack of compromise isn't just made up willy-nilly by some control freaks. There's a reason for it: Donor organs are so rare that only people with a medical need should get them, not just the people with the most money who can pay the most.