Ulisis: if you want to know how I “know” that G-D doesn’t want 10% of our girls to be agunos and yet I don’t “know” who everyones “basherete” is it’s pretty simple.
What took place 40 day’s before any of us were born is quite difficult for us to know, and frankly quite irrelevant since it can not impact our lives in any practical way.
To alleviate the pain of people who are part of klal yisroel is our duty. For a community to perpetuate the devastating situation that is (primarly self inflicted) due to lack of action- that’s a travesty.
Correct: I “know” that the ribbon shel oilam doesn’t want the community to act in a way the causes 10% of girls to have not shot. I don’t think that knowledge qualifies as “nistaros”.