Because entirely successful communication is impossible. It never occurs. Because mostly successful communication is difficult. People do not entirely understa

Because entirely successful communication is impossible. It never occurs. Because mostly successful communication is difficult. People do not entirely understand what they are "saying"; people do not entirely understand what they are "hearing"; people do not achieve consensus on the meaning of the terms utilized beforehand. As a result, people are almost never participating in the same conversation. Because of a lack of training. Because of particular neurological configuration. Because of past emotional conditioning. Because of social pressures. Because brains.