At first when I posted it I think I was thinking of it as kind of endorsing a pragmatic approach to language usage. I mean, it hurts communication to change the meanings of words without telling anyone, but occasionally it might be useful to update meanings when old ones are no longer useful. It used to be that a "computer" was a professional employed to do calculations, then it became a device to do calculations with, now its a device to do all sorts of things with.