Even if you do cut, you can miss a problem with the cord, unless you cut a really big hole. Then, you leave the egg exposed for a whole set of new problems. It is a personal preference and I have no issues with an experienced keeper cutting eggs. My concern is the inexperienced keeper cutting too early, then not knowing what to look for or how to fix problems. I just hate to see lost clutches because of issues that could have been easily avoided. For me, I don't really see a need to cut any longer - guess I've just learned patience.