Communication, even in our ancestors, is a natural thing that's needed in order to survive. How can a "non-communicating environment" affect a person? Take this as an example, an individual saw someone kill a person in their backyard. The police came, and interviewed everyone in the subdivision, including the individual. The police asked him, "I want you to answer me, in a clear and short answer. Did you heard someone doing weird things last night?". The man said, "No, I didn't." The police nodded and left. Was it because the man was afraid? No, it is not. It was because of the lack of communication. The police told the man to answer and the only question seems way too unexplained. Lack of communication can make someone have different perspective on something, since there is a very little explanation provided. This, can lead to confusion, and other problems that may becam harder to solve.