For me it’s time signatures in music. I grew up playing instruments, played in several orchestras, etc. But no matter how many times someone tries to explain time signatures to me, it makes no sense. I don’t understand why people place such importance on it. To me, notes have a pitch and a duration, maybe some dynamics. That’s it. I don’t understand why people try to needlessly complicate it. It doesn’t give you anything.
My wife will hear a song and go “Oh neat, it’s in 5/8.” And I’m like “How tf do you know that, and why does it matter?”
More info:
https://en.wikipedia.org/wiki/Aphantasia
Interesting that a few of the notable known people with it identified are authors. I’m not super familiar with them, but I wonder if it leads to writing more detailed descriptions which can help their written works be more memorable.
Personally (I have this) I tend to forget to write any visual descriptions at all and focus on other senses that I can imagine. Sound, smell, feeling, etc. Also character drama and development
I got so mad trying to read Lord of the Rings because it was just pages and pages of descriptions that were completely useless to me 😂