To assume good faith is a fundamental principle on GCSE Wiki. In allowing anyone to edit, we work from an assumption that most people are trying to help the project, not hurt it. If this were not true, a project like GCSE Wiki would be doomed from the beginning. When you can reasonably assume that a mistake someone made was a well-intentioned attempt to further the goals of the project, correct it without criticizing. When you disagree with people, remember that they probably believe that they are helping the project.