In accordance with the first rule of this puzzle, I am ready now to declare that this post is NOT an attempt to solve it. Although it may LOOK like a guess, it is not. If it were, it might be worth someone's time and effort to be reading it. But it's not, and there really is no justification for the 8 or 9 seconds anyone has invested, and possibly 4 or 5 additional seconds a misguided soul might further invest. But because any self-respecting post really ought to have embedded within it a spoiler to hide something, even the true non-attempt to solve this puzzle that this post is ... Well then ... here's mine:
I expect full and appropriate credit for the crackling insight evident therein.