This happens all the time when you get stuff made. It's generally good and useful, but the real challenge is in getting these changes documented, and getting th

This happens all the time when you get stuff made. It's generally good and useful, but the real challenge is in getting these changes documented, and getting the changes verified against the original specification. The Hyatt Regency walkway collapse was a good example of this going wrong: while the original design was flawed, the fact that it wasn't easily manufactured meant it then got modified, and even though the builder discussed the changes with the designers, the designers did not check that their original calculations still applied and as a result the structure was substantially weakened and collapsed. Also, making sure this process for exists and is documented precisely is one of the reasons medical devices are so expensive. https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse