We have these common concepts which are actually very personal everywhere.
Even with good eyes the color perception differs a lot between different people. For most it's obvious that this is red and this is blue, but in between the colors it gets very fuzzy.
The same goes for sounds and smell and touch, so for every sense.
Totally, the gold/blue dress picture is a perfect example of that[0].
I think with aphantasia, what makes it so interesting to me is just how much I consider visualizing in my mind to be core to how I think and understand things as well. It's not as subtle or isolated as a reaction to external stimuli but more fundamental to who I am along sitting along side my inner monologue.
