If a person hears something and disagrees, he will interrupt the conversation to voice his opinion. They will then begin going back and forth, exchanging opinions. This is how arguments start, often leading to fights. The person wanting to say something does not have the ears to listen. He forgets to listen to the other person thinking solely of his own opinion and neglecting to hear the opinion of others.
Communication is just like breathing.
Imagine yourself breathing. You inhale and exhale. Watch another person carefully. Let him exhale first, then let him say what he thinks first. Next will come time for him to inhale.