It's even better. If it's just making stuff, you don't even need `BubbleMachine` if you have the `Bubbles` base class. You can add creation method on the class

It's even better. If it's just making stuff, you don't even need `BubbleMachine` if you have the `Bubbles` base class. You can add creation method on the class side of `Bubbles` like so: `Bubbles class >> #newGum` ^ GumBubbles new `Bubbles class >> #newSoap` ^ SoapBubbles new The difference here is that the base class still serves as a true base: it will have all the common functionality for various kinds of bubbles