It helps to have a couple of things in the back of your mind. Most of the rules and regulations we have started from a logical source. However years of tinkering have removed much of the linked to the real work and now they are often simply 'rules'. So not much logic or justification.
Then we have the military or perhaps military thinking. We largely work in environments where people learn and then utilise skills. Much of the time in training is about generating those skills. The military and to a large extent the CAA and other quasi-legal organisations use the examination systems to select people. Not to establish skill levels but to wash out the 'inappropriate'.
Hence so many of the word games. It is a way of 'ensuring' that only people with a reasonable intellectual level can pass. So you learn the basic skill and then demonstrate a reasonable level of mental agility to pass the word games.
Will you ever need the answers to the questions in the exams? Almost certainly not - the only positive thing you can say is that the swopping necessary for the word games usualy means the basic undertanding of things like air law usually sticks!