@Greatpotfarm I’m in a similar position these days, Dan, where I don’t need to know the time too precisely. I’m very happy to take a single handed watch on holiday (I’m wearing it for a few days at the moment) because my brain has learned to read the time on it. As you suggest, people who can read a standard clock fluently automatically register the geometry of the hands…close enough.
It can happen with other things. I’m hopeless at following manuals with pictorial instructions. I prefer words. But supposing the words are in a form you don’t understand…?
Before I started learning Greek I looked at the word ΕΞΟΔΟΣ and not might not have understood. The fact that it was in white on a green background with a pictorial of someone following an arrow through a door, and the word EXIT printed below (it was in an airport!) gave me an inkling as to the meaning. When I realised it was pronounced rather like “Exodus” more things clicked into place. After a few days in Egypt I began to recognise the shape of the equivalent word in Arabic through the same visual clues, but because I can’t speak or read the language I wouldn’t know what it sounded like, and it didn’t take me long to forget what it looked like.
Without realising it, we take all sorts of clues from our surroundings and familiarity enables us to make sense of them. Is that a huge mass of dark cloud over there? Is it getting closer? Is there a possibility it might rain soon? It wouldn’t surprise you, would it?