Taking on what looks like a clean, well-defined job and watching it slowly expand into something else entirely is a pattern that shows up more than it should. Each new request seems small on its own, but they add up until the project looks nothing like what was originally agreed. By the time you notice how far things have drifted, a lot of extra work has already been done. It usually points back to a brief that was never detailed enough at the beginning. Has a project ever changed so drastically that you had to stop and renegotiate everything from scratch?