By local object, I mean an object defined in whatever object the above code is written. But anyway, the guideline takeaway is: work locally. This isn't so im

By local object, I mean an object defined in whatever object the above code is written. But anyway, the guideline takeaway is: work locally. This isn't so important perhaps in the stuff we showed here, but if you had many operations on it, then you risk being fragile to changes in db's api. That's what you are trying to avoid (because they do change, and in ways that can break things). It's probably so obvious now that you're scratching your head trying to figure out what the hell I'm talking about he couldn't be saying something _that_ stupid!. But back when OO was just going mainstream I would imagine that guidelines like these were useful as all the new programmers likely had the same questions and the guidelines answered them.