That's just it, you're not saying anything. The last coherent thought you had was an assertion that YAGNI may include not implementing extension points. But th

That's just it, you're not saying anything. The last coherent thought you had was an assertion that YAGNI may include not implementing extension points. But then DHH, while admittedly starting with a made up premise that made no sense, came along and obliterated that notion by the end, detailing how extension points – what he calls model, integration, and system – are necessary to keep tests sane. And, since YANGI emphasizes testing, we can be assured it actually does include implementing integration points.