Exactly and figuring out all the logic with code that's been refined and built out of 20-30 years. Any developer saying, "Hey, go and rewrite the code" underes

Exactly and figuring out all the logic with code that's been refined and built out of 20-30 years. Any developer saying, "Hey, go and rewrite the code" underestimate all the edge cases that end up all over the place in the application.