Internal communication are all processes that you need to function as a person. Let me start with some examples. Most people feel ashamed when standing in the street and talking to themselves. 

At first, they stop and stand still while thinking about something. 

Slowly they start talking to themselves, first softly but finally louder and sometimes others can hear what they say. How often do you do this? Most people do it at home or in secret and hardly dare to admit it. But let me tell you a secret. Everybody does it. 

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