The Lesson Is You Need Good Abstractions

The lesson, i think, is you need good abstractions. It's just tat at some point you are using the wrong abstraction or a bad abstraction meaning badly cuoded. I also want to bring up one more perspective, another meta perspective we can apply, which is hybrid. Right now we have this straight line spectrum, concrete to abstract. But what if we could point to a particular layer in our stratified design and say, that is the concrete one, and then up and down from there are both abstract?