It does. When you are the author, you know what you mean to say, so your brain tells your eyes what they saw, not what is actually there.
Your brain doesn't tell you everything, (you'd be stuck forever if it did). It only bothers you with information that it considers relevant.
If you're reading it for the first time and looking for the information, rather than providing it, you do notice. (Especially if you're a nit-picking saddo like wot I am.)
The side stripe is right in the middle front of my shelves, there's an ordinary button rim blue one in the middle and the two amethyst striped ones on either side.
I like that there are two of the scarce ones and only one of the normals, when I know that is totally unrepresentative of reality.
It's a significant place of honour. I moved my National Treasure for it!
(A Sam Herman RCA piece from '67.)