A model earns its place when it helps someone make a decision. More geometry is not automatically more useful; the right level of detail depends on the question in front of the team.
Build around the decisions that recur: fit, access, coordination, sequence or visual intent. Keep the model understandable to the people who must act on it.
A clear model also makes uncertainty easier to discuss. Teams can point to a shared object, test alternatives and record what changed.
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