I've started to come to the conclusion that only greenfield projects consist of repetitive plumbing. Legacy software is like plumbing if all the pipes were tied

I've started to come to the conclusion that only greenfield projects consist of repetitive plumbing. Legacy software is like plumbing if all the pipes were tied into a knot. The edge cases, ambiguous naming, hacky solutions, etc. all make for a miserable experience, both for humans and AIs.