You spend your life surrounded by people who have skills you take for granted so much that you don't consider them skills.
Then you have a moment of shock when you discover that an otherwise functioning adult does not have a skill that is possessed by everybody you have ever known.
In my head I can conceptualise the difference between 10,000 acres & 10,500 acres. I know exactly how big each is. I can do the same for square miles. I know 900 square miles from 800 square miles. But I don't expect many people outside my upbringing to be able to do the same.
But some things you believe are universal.
I can remember the stunned moment when I first realised there are adults who haven't a clue about distance, that telling them something is "a hundred miles away" meant the same to them as saying "ten miles away" or "a thousand miles away".
A bigger shock was when I realised there are plenty who have little understanding of temperature.
Today I encountered a business owner aged in their thirties, who is totally unable to read a weather map. It was nothing more than an abstract drawing to them.
To me the chart said "we're going to get under some very heavy rain in a few hours", and as it is a picture, said it much more clearly than were it to be printed here in text in the English language. A weather map is something you grow up deciphering & reading.
Or so I thought.
It seems that us country boys have some skills that our urban cousins never get around to developing.