It's rarely malicious. Good ideas emerge as a project takes shape. The problem is when additions are absorbed silently, so the timeline slips and the budget is blown without anyone deciding it should. That's how projects quietly go over.
The fix is a simple change process: new requests are logged, estimated, and approved (or deferred) rather than assumed. This keeps the project honest and lets you consciously trade scope, time, and cost instead of discovering the trade-off too late.
Updated July 2026