'People make it sound like they are able to see the same with their eyes closed as they can see with their eyes open.' It's a spectrum of vividness. At one ext

'People make it sound like they are able to see the same with their eyes closed as they can see with their eyes open.' It's a spectrum of vividness. At one extreme, a few per cent of people are classified as aphantasics. At the other extreme, people have a photo realistic mind's eye. Most people sit somewhere inbetween. I don't think people are necessarily overestimating. Some people just imagine the world very clearly. I would say that I can see objects in my mind with something close to photo realism. The only time that things become hazy is if I imagine the entire city in which I live. I fly round imagining every street and I can see familiar areas very clearly, but if I stop and examine a street I don't know so well, I can't remember which exact shop is where. But that seems to be a problem of memory, not visualisation.