<p>You check it against the record, not against memory. A quick answer is only as good as what it was based on, so open the comparison before you commit to it.</p> <p>Here is the routine:</p> <ul><li>Publish the current model from Revit or Navisworks.</li><li>Compare it with the revision the answer was based on. Any two revisions compare element by element.</li><li>Read the changed elements by category: structural, MEP, envelope, interior.</li><li>Check the issues pinned to those elements. Each carries its sheet and revision.</li></ul> <p>That takes about 15 minutes, not a 90-minute meeting. Speed does not have to mean guessing, because the answer comes from the geometry and the history behind it.</p> <p>If the client asks how you got there, you show them which elements changed and which revision delivered them.</p>