if you can’t see it, then you’re not positive it’s there, which makes it hard to confront without jumping to conclusions, but if you can see it, then it’s easier to handle since the evidence is right there staring you in the face.
It’s the basis for a lot of problems, control. You can’t really control a situation when there are unknown variables, but if you know(seemingly) all the aspects, then you can try to become in control and attempt to handle it.