Some people can't read a map in North view, that's where customer interviews get interesting - they even need a 3D view or the speech. Actually in my IT-engineering school a subgroup couldn't read the technical blueprints at all (drawings of mechanical parts in left/right section), and it was all the students from Morrocco - even if both their parents were French immigrants with servants and wealth. The only possible explanation I've though about is that they may not have been exposed to Lego when young.