I know this sounds like an extreme statement but I believe I can show you that you understand everything.
Let’s take a biggie to demonstrate: What happens after you die?
I think this is a question most people would claim to not understand.
In answer to this question there are a couple of answers I can come up with. We could wake up in heaven, there could be nothing, it could be hell, or a shifting of awareness from the individual to the universal.
I don’t know which one is the case but each of them I understand and so do you.
This shows us that when we use the word understand we haven’t been pure in how we use it. Instead we have mixed up in it concepts like certainty or knowing which understanding is the correct one.
Some may say that we don’t understand these answers because we can’t conceive of them. This is a bit like the claim that we can’t understand infinity.
We can clearly understand infinity because we can perform maths with it and make statements about it. Whether or not any of these understandings of infinity are “correct” (which means nothing less than that they are the correct expression of what is actually the case (where-ever you want to place that actuality)) is irrelevant to what I’m getting at. There will be a correct answer and because it is an answer you will be able to understand it.
But aside from this the claim that you don’t understand a thing if you can’t visualize it or imagine it is clearly refuted by number.
What is the number “2”? It isn’t the symbol because II and 10 are all symbols for the same thing.
It isn’t any quantity of objects you imagine. This is because 2 can be said of any couple of objects irrespective of what they are. That is to say that in any attempt to locate 2 in any 2 objects will fail because 2 is not an object that can be seen.
But to bring it to point, the fact is we all clearly understand numbers because we use them. A mathematician may have a richer or more explicit understanding but you who are not a mathematician still understand it at a fundamental level.
To demonstrate this imagine changing the lengths and angles of a triangle in your mind. You can do this and you’ll see the triangle changing in a certain way. You may not even be aware that you are aware of the relation of angles and lengths but you are and that understanding or relation is demonstrated in the imagined triangles.
All that a mathematician does is try to pin this understanding down into a statement or equation that it is easier to do work with.
But just as a mathematician knows he has the correct equation because he can produce many triangles from those equations so you too can produce many triangles in your mind all of which will conform to the laws of triangles and this demonstrates that at a very fundamental level you understand triangles.
So we may not yet know that we understand everything but that’s only because we haven’t been aware of everything. But any answer to any question is going to be intelligible because it is an answer, because that is what an answer is.