The logic is simple: you understand a thing better if you are able to see it from all sides. When the subject in question is a physical object, that literally means looking at all of the different sides, like orbiting the dark side of the moon. When the subject in question is an intangible, however -- like a question, a controversy, or an idea -- we also do well to try to see it from all sides. That’s our reasoning for soliciting other people’s perspectives: to see and understand the whole thing better.
Perhaps the same approach can be taken with people.