Hi Jimi, you add a good observation to what I have experienced. Your comment reminds me of one student who could/would ONLY do his math work in his head. He could not, or would not, write it down. This worked well for him - he was an honor student - until he got into tenth grade and the math got harder. Then he started failing. Neither I, nor his distraught parents or teachers could get him to change, to write down. sadly this behavior applied to other subjects such as history. so I’m thinking that he must have had an extreme “case” of aphantasia: strong imagining visual coupled with weak observational (or whatever one might call it) for the concrete written. I’d be curious to know how he turned out, it’s been many years, and to examine him with aphantasia in mind.