I just learned that there's something called aphantasia: Aphantasia: Software engineer Blake Ross writes ‘mind-blowing’ post about being unable to imagine things | Science | News | The Independent
I originally read the post that the article above links to, and I'd recommend reading that too. I'm not sure if the direct link requires you to be logged in to facebook though so I didn't post that first (but it's here: Aphantasia: How It Feels To Be Blind In Your Mind)
I recall someone here saying they're not able to picture images in their mind, but I can't remember who it was.
I originally read the post that the article above links to, and I'd recommend reading that too. I'm not sure if the direct link requires you to be logged in to facebook though so I didn't post that first (but it's here: Aphantasia: How It Feels To Be Blind In Your Mind)
I recall someone here saying they're not able to picture images in their mind, but I can't remember who it was.