Simon spends an enormous amount of his time and energy categorising the world to try to understand it better, a task which overwhelms and exhausts him. He has no friends or brothers or sisters and he hates going to school and hates all but one of his teachers at school. Simon could be an interesting person; he has passion and awe and wonder at the world and even some passionate interests, but he keeps these safely to himself. In fact he has always known he is different from everyone around him – from everyone else in the whole wide world – but just how far will he take those differences? 'An Explanation Of The Categories' and other titles brings one individual’s lonely and absurd experience of life into head-on collision with real life.