If you focus too much much on current abstraction, you lose sight of better ones - that was the point of my previous post. I also don't agree concrete stuff de

If you focus too much much on current abstraction, you lose sight of better ones - that was the point of my previous post. I also don't agree concrete stuff derives from abstractions. You can make concrete stuff, using certain models/abstractions, but their behavior will always differ from the model. Because model aren't reality.