Not the GP, but I'm also aphantasic. To me, the square hole question is more like "cubes have square faces, therefore yes". Seems to me like touch typing (knowi

Not the GP, but I'm also aphantasic. To me, the square hole question is more like "cubes have square faces, therefore yes". Seems to me like touch typing (knowing shapes) vs. hunt-and-peck typing (search for shape, align). For the "what happens if" question, it's similar: "based on facts from experience, what happens next?". I lack the requisite knowledge base for ochem specifically, but in software, I'm usually able to come up with "have you considered input X" when reading code that just isn't handled well. I don't have any visual reference when thinking about such things; I just "feel" that there's an unhandled edge case. There's nothing concrete that visually represents input values, but I guess a marble maze could work for folks though.