You say something, but you just move air. This movement floats through the ether. It moves my eardrum and stimulates my nerves. I hear something. My brain thinks what you just said. My brain produces the same electrical waves in my nerve cells as your brain before.
Through the exchange of energy by talking we are sharing our thoughts. The core of communication is the exchange of energy. This process brings all participants on the same frequency of their thoughts. Therefore communication tunes our thoughts, forms our beliefs.
Communication creates ideas.
Communication widens the range of choices.
Communication builds communities. Not communicating destroys communities.
Communication is a special social function.
Communication binds together what we are, feel, think, imagine, experience and wish.
Communication can fail, but keep doing it, anyway.