One of the problems with PPL exams is that the person setting them has in most cases no relevant experience of teaching for, or examining candidates for a PPL. They have in the past been experienced theoretical knowledge instructors at a more advanced level. It is therefore quite difficult to set questions at a lower level that they are not familiar with. As the last CAA ground examiner is about to retire, and not be replaced, they are left with zero expertise in the field of PPL exams!