Thanks for the reply, Sparkys_Dad.
OK, fair enough. What differentiates these changes then from other previous updates - where the same has been the case?
(The reason I ask is because my own belief is that there are aspects to these changes which were apparent long before the phrase "sandbox" came into being. And this, and the implication that it is a particular thing that is done to a site which one has no control over, is why I don't agree with the concept of thinking of a "sandbox" and why I think it does matter how you refer and react to it.)