There’s a difference between knowing part of the story, and knowing the whole story.
Sometimes, when we have certainty about one aspect of the story, the temptation is to bring that same level of certainty to the other aspects that we don’t actually know. Yet when we make decisions based on the assumption that we know with certainty what happened, and then we happen to be wrong, we can end up thinking or feeling or acting in ways that are misguided and not helpful.
Better to hold lightly to those things that are probable, and tightly to those things that are certain. And of course, this necessitates learning to discern the difference.