See you in my dreams !

Before i start, i'm letting you know now that this could be considered ignorant, naive, and allll latt but i deadass just don't know !...

Anyway, AllyKatt here
Sooo i was thinking right... you know how when you close your eyes and picture something, anything, sayyy, i don't know, a tall old man wearin a red hat hunched over in a brown chair playing an aged trumpet in his wrinkled old hands that look kind of like a worn leather suit case, you can see every last detail ?
I know you know what i mean because i know you just pictured a tall old man wearin a red hat hunched over in a brown chair playing an aged trumpet in his wrinkled old hands that look kind of like a worn leather suit case, and even though you probably didn't picture exactly what i did, i'm sure there were similarities.

And the same thing with dreams.. like you can dream about anythingggg, I think its really cool actually.

but anyway my question is, for a person who has been blind their WHOLE life, some one who has never seen the light of day or the dark of night, what to they see when they dream. Can you really picture something if you don't know what anything looks like? Even something as simple as a line..like picture a line... idk about you but i see like a skinny black rectangular bar-type thing..
But a blind person can't even "picture" something as simple as that, because, sure you know what words mean and you know relationship, but can you make that into a picture if you dont even know what a picture is ?

i really wanna know, but i don't know any blind people.