I think some people just process things differently. Even if they can read, they find it difficult to picture a scene from words, but can put a scene into words. I don't know if that makes sense. It's like they can describe things exceptionally well, but the reverse image - things being described creating an image in their head just - doesn't. Like a one way street I guess. One of my kids is like this. It baffles me tremendously, but I can't deny their experience. For them, movies, shows, documentaries, etc. are how they primarily research, though they will read articles because "facts are facts, no image required" *shrug*