Agreed, I wish there was an example to keep people interested and educated rather than "amazed and entertained"... I actually don't like articles like this that make the simplifications and models we use (in this case for semiconductors) seem opaque, "unreal", and more difficult than they really are. It's true that there are abstractions (like bubbles aren't real?) that are convenient for calculation that otherwise seem strange, but showing how those are useful would be more interesting than saying... Look how amazing my magic is, you just couldn't understand it, because it makes no sense to anyone but us wizards.