Here’s some evidence for you: when I close my eye, I see black. That’s it. No amount of effort conjures an image. That’s not what most people I talk to about it report, so I am going to assume there’s a functional difference between me and people with functioning visualization.
I have the same. I'm looking at my laptop's screen as I type this, and if I close my eyes while typing I cannot even visualise said screen. Now, I can blind-type, recognise faces, navigate aso without any problem. I can even play chess quite well (fide ~2050, 2200 blitz on chess.com), but I cannot visualise a chess board, nor can I visualise my moves or the moves of my opponent.
However, I don't "see" (pun intended) it as a problem. On the contrary, I'm not wasting cycles on irrelevant details while I'm thinking.
>Here’s some evidence for you: when I close my eye, I see black.
This, I can imagine things, but it's like the idea of something, not a picture of it. Blows my mind when people tell me their imagination is like watching a movie.
Same! My wife is at the opposite end and can visualize these wild scenes and describe them in detail and I’m like “I can tell you roughly where the parts of a cat go”.
I believe you. Why wouldn't someone believe you? There's not much reason to claim "I cannot do X" maliciously. I'm hopeless at catching a ball, can't play tennis to save my life, for instance... believe me?
I just want to throw my two cents in: I think I have a pretty good level of visualization ability, but it's not actually projected into my field of vision. It's like having a second monitor plugged in somewhere... _else_. It doesn't overlap with the 3D space of our world. I don't SEE it, but I do "see" it, not as concepts but as something akin to generated memories.
It does often help to look away from visually distracting things so that the mind is more free to use its capacity to generate things.