Separate the aim, the facts, the assumptions, and the proposed action. Ask which part is in dispute. You may share the goal but have different estimates of the cost, or agree on the facts while valuing the outcomes differently. Naming the disagreement makes it possible to choose the next step: gather evidence, clarify priorities, or test an approach.
Find the part you disagree about
Two people can argue about a proposal while disagreeing about entirely different things.
A small example
Two colleagues disagree about weekend opening. One worries about staff coverage; the other assumes staffing is already arranged. They need a capacity check before another debate about customer demand.
Keep in mind
Some disagreements involve values or conflicting interests. More data alone will not necessarily resolve them.
A note to yourself
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