Visualizing

I was driving and listening to the local mostly-annoying NPR radio
station, but they had an interesting interview with a book author. It
was about his novel or some poetry or something.

What was interesting was his recalling a conversation that he'd had
with his wife. She was takling about a plant or something and asked
him to visualize it. He was astounded that she, or anyone, could close
their eyes and *see* something they were thinking about.

I was shocked to learn that there are people who can't form a mental
visual image.

Close your eyes and consider a nice white ceramic dinner plate with a
beautiful deep red apple sitting in the center. Can you see it? From
the side and from the top? Do you see the stem? The colors? Imagine it
slowly rotating? See the fruit fly?

If the world is divided between people who can visualise and people
who can't, that could explain a great deal.