In a discussion, opposing views are presented and defended and the team searches for the best view to help make a team decision. In a discussion, people want their own views to be accepted by the group. The emphasis is on winning rather than on learning.
In dialogue, people freely and creatively explore issues, listen deeply to each other and suspend their own views in search of the truth. People in dialogue have access to a larger pool of knowledge than any one person enjoys. The primary purpose is to enlarge ideas, not to diminish them.
"It’s not about winning acceptance of a viewpoint, but exploring every option and agreeing to do what is right."