Assuming good faith is a fundamental principle on Wikipedia. It is the assumption that editors' edits and comments are made in good faith. Most people try to help the project, not hurt it. If this were untrue, a project like Wikipedia would be doomed from the beginning. This guideline does not require that editors continue to assume good faith in the presence of obvious evidence to the contrary (vandalism). Assuming good faith does not prohibit discussion and criticism. Rather, editors should not attribute the actions being criticized to malice unless there is specific evidence of malice.
When disagreement occurs, try to the best of your ability to explain and resolve the problem, not cause more conflict, and so give others the opportunity to reply in kind. Consider whether a dispute stems from different perspectives, and look for ways to reach consensus.