The statement about most effective communicators involving a third unbiased party is; True.
Communication simply denotes the excahnge of messages between two or more persons.
Now, efficiency in communication doesn't denote that issues that would need an arbitrator wouldn't arise.
Being efficient in communication isn't a factor that will totally eradicate the fact that some differences or issues may arise between communicating parties.
Thus, we will conclude that an arbitrator may be needed to resolve issues between quarrelling parties
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