hpolatyuruk

The article is not about refactoring. It's about rewriting the software. So that's why I didn't mention about refactoring in details. Automated testing is part of the refactoring. You will change a small amount of code then run tests to see it works as expected. This is how refactoring works. No need to mention abou that.

Yes, I've heard that too. But in our rewriting case, it didn't happen. We didn't make that mistake. Usually, developers made a lot of mistake in the first version and they learned many lessons. Now they are experienced about software and they will try to implement everything in the 2nd version. And they will come up with the complex system again. In our case, we cut off many features and we kept our code base small.