Baseline drawings in one review session. Revised sets in an email attachment. Specification updates buried in a shared drive nobody syncs. When a new revision drops, someone opens both sets side by side and starts reviewing differences sheet by sheet, detail by detail, and callout by callout.
That review labor often sits inside project overhead, even though missed changes carry real downstream cost. The costs stem from disconnected project information flows, and how documentation errors and rework surface later, when correction is more costly.
