So far we've had no inner vision in 3D, and now no voice. I am wondering if we're going to get another or if these two are the only choices out there? I suspect no sense of spatial direction isn't "it" nor is "no sense of writing" because I know I can visualise written words, but it's not what I do when I read and I read (and recall) a lot of written work. Or perhaps I do, and I don't yet understand that I do? Dreaming of reading is not the same as a mechanistic approach to what reading comprehension "is" and possibly my interior model of what writing is, is more than just the vision of the surface of ink?
Would it be possible to e.g. have no sense of time? No innate ability to recall sequence detached from consequence? "this, because that prior" is causal. "this, followed by that" is simply sequential.
I can't even imagine how to test some of this. I think its amazing how people can think up a test for this kind of thing. Thats a well known phenomenon: Failure of imagination. I got that.