Disagreements usually come from one of two sources: different information or different interpretation of the same information. Treating both as “opinion” wastes the chance to learn.
Getting beyond disagreement requires diagnosis. Where exactly is the difference? Is it a disputed fact, a different assumption, or a different value? Once the location is clear, the resolution is easier: test facts, debate logic, or acknowledge values.
The hardest barrier is emotion. People protect their identity by protecting their view. So the culture must normalize changing one’s mind as strength, not weakness.
When resolution is needed, the process must be explicit. Decide who has authority, how believability is weighed, and how a final call is made. The goal is not endless debate. The goal is to use disagreement to improve thinking, then move forward with clarity and commitment.