It's certainly possible to know something happens without having exact numbers e.g. we know people consistently die from COVID but we won't have a truly solid number for the death rate until COVID dies down and we do antibody testing. And that's now! Think of how uncertain we were about the death rate 2 months ago yet we were still certain people were dying from it.

We don't have the numbers showing the number of guilty people found innocent. We also don't have an accurate count of the number of innocent people found guilty, only that it has happened consistently. I explain this in the rest of the post.

My argument does not jive only if you are looking for flaw and determined to find it even if it is only semantics.

Best of luck to you in these trying times.