Some people do talk about The Man. Such as those who want to stick it to The Man. You're being The Man here, so I'm going to stick it to you.Honestly, there's nothing grammatically incorrect in talking about. Yes, when used in a sentence like that one, "the time" usually refers to the current time, but there's no reason it couldn't refer to allthat has passed since we last talked about the time.It's not even the only time that "How the Time Flies" has been used as a title. It's only wrong if you're trying to quote that particular idiom.I don't know why I'm bothering to argue this, but Ia native speaker, and I know thatthat has flown by can refer to a specific quantity of time, which is just as correct as the concept of time in general in this context, if somewhat less commonly used.