Give me a slow, brittle, complicated, poorly documented app written in X by a bunch of people who have long since left the company, and I'll show you a way to m

Give me a slow, brittle, complicated, poorly documented app written in X by a bunch of people who have long since left the company, and I'll show you a way to make a person hate X. It doesn't matter what X is. And it's a shame, because improving or replacing those legacy X's can be a big opportunity, if the person is set up to seize it in the right way.