[jbrains]

This happens all the time.

We have a vague notion of a thing, so we call it "X". Later, as we learn more, we realize that we can think of X as a category of things, and that one of those things, annoyingly, should probably be called "X". Now we have a problem. Some people will call the thing X and some people will continue to call the category X, because they read our blog posts from five years ago, because they were so popular, because we are so awesome.

This is a sign of a good thing, even though it causes confusion. Now we have to roam the countryside saying "I know we say 'X' to mean this general thing, but we also say 'X' to mean that more specific thing. I'm really sorry. It's my fault. I recommend that you say 'Y' to refer to the category, but be prepared to read 'X' on the web. It is what it is."

It is what it is.