Understanding is a process that is vital to survival and learning. If you weren’t able to make sense out of your experience in some way, you’d be in big trouble. Each of us has about three pounds of gray matter that we use to try to understand the world. That three pounds of jelly can do some truly amazing things, but there’s no way it can fully understand anything. When you think you understand something, that is always a definition of what you don’t know. Karl Popper said it well: “Knowledge is a sophisticated statement of ignorance.” There are several kinds of understanding, and some of them are a lot more useful than others.
One kind of unerstanding allows you to justify things, and gives you reasons for not being able to do anything different. “Things are this way because … and that’s why we can’t change anything.” Where I grew up, we called that a “jive” excuse. A lot of “experts'” understanding of things like schizophrenia and learning disabilities is like that. It sounds very impressive, but basically it’s a set of words that say, “Nothing can be done.” Personally, I’m not interested in “understandings” that lead you to a dead end, even if they might be true. I’d rather leave it open.