You should discuss issues in a calm manner.
Don and Sam are having a debate over healthcare policy in the US.
Don wants to voice his views.
Don listens to Sam and voices his disagreements when it's his turn to speak.
Don begins yelling over Sam because he disagrees with his position.
Don is able to see where he and Sam agree and disagree and come to a mutual understanding.
Don looks childish for not having a civilized conversation and fails to truly understand Sams point.