【明報專訊】In our day-to-day life, there is hardly anything quite as relieving as going to the toilet. It is an example of how we often find great joy in the simplest things we do in the humblest places of all. However, it is not necessarily as smooth and enjoyable as we could imagine. For the 4.2 billion people who do not have access to safely managed sanitary facilities, this could be arduous (艱巨的) instead, and they have to make an extra effort to get it done.