Originally Posted by
parkfell
Mental arithmetic for a start.
Q.1 what is the square root of 81?
Q.2 what is the cube of 9?
Old fashioned ~ Moi?
That would result in a huge pilot shortage. Today you can be happy if those questions can be answered with the use of a pocket calculator.
Ballpark mental arithmetic was necessary in the slide rule time, because it did not give you the decimal magnitude.
SA and having the „big“ picture or at least some idea to analyse a situation or measurement is difficult to teach. And still you learn every day something new.
But I don‘t think that the median intelligence deteriorated a lot. It is more the problem of your memory that glorifies the past.