Okay, okay, tie for some honesty. I did not read this entire thing. I skimmed all of it, and then went in with a closer eye to the sections that I thought I could make sense from.
I really didn't understand this piece until we started to go over it more in class, and I could look at the text in context with examples.
But, what I think about with this piece is this:
A text can be open and closed. And as a writer, I believe that is partially a choice that I have to make in every piece that I write, but it is not solely left up to me. I cannot control the reader, and I cannot know their knowledge or their consciousness. You could, for example, find something I write open if it has German in it and you do not speak German, but someone who does, perhaps finds it closed.
But, then, I get confused because I think that Open and Closed should be different. So, something being open means that it just spools out, its all over the place and its hard to find your way in. Closed is something that's tighter, easier to understand. But, if something is closed to me, it means its closed off, that you can't access it.
So, I remember this by saying its the opposite of what I think it should be.
As for whether or not a text should be open or closed, I don't care. I believe it depends on what you want. If you want a large readership, than perhaps something that is closed would be better suited. If you do not care, then write whatever it is you want to write, regardless of whether or not its closed or open.