This is a legal concept but one that has broad application. This term recognises that there are people with different understanding, different perceptions and paradigms. That the intention ie good faith is important for the success of any engagement.
So lets say the object is to build, to work together to bring our chess to the next level, we will still find many disagreements. So we will sit down to talk, to discuss, present our arguments. If there are still disagreements, we will agree to disagree, allowing time or new evidence to lead the argument one way or the other. All in good faith.
Good faith also recognises that no one is perfect. Not the juniors, parents, not even MCF officials, not the arbiters, the trainers or the coaches. Everyone is learning, mistakes will be made. In fact it is from the mistakes that we grow. So long as we learn from it. It's all a process. Patience. Resolve. Good faith makes all of the above a positive engagement.
Mala fide. Bad faith. (also see "mens rea") In law, if mala fide can be proven it can render even a contract null and void.
Bad faith is shown by calculated lies, non disclosure of relevant information and sabotage; by hidden agendas and ulterior motives. Engagement is then pointless. There is no good faith.
Now if this situation exist, can we take the law into our own hands? The answer is no. We need rulings. That is why we need a functioning MCF that is guided by its own constitution. All have the right to exist but that right needs to be circumscribed. That is why we have the higher authorities. They are the compass. They set the way.