The most important thing is not to get the code right but to get the interfaces right. If you do that, you can isolate the ugliness and the inefficiency and fi

The most important thing is not to get the code right but to get the interfaces right. If you do that, you can isolate the ugliness and the inefficiency and fix it all incrementally as needed and as the mood strikes you. Getting the interfaces right is not easy, but it's a hell of a lot easier than getting everything right.