Code 10/8 indicates that the mood arises from nothing more than simple 'tiredness'. Tiredness is a natural reaction of the body to demands made upon it. Tiredness is no one's fault. The main point about code 10/8 is that it explains a mood on the basis that is no one's fault. It is true that the code may be misused as a general explanation of bad temper and irritability. Should this occur then the people around will start to give a different meaning to the code. 'Yes, I am in a difficult mood. But it is no one's fault I am simply very tired.' The signal is also a request to be allowed to have a rest.