The meanings of words are in constant flux.  I assume this is a common idea in linguistics, but I first encountered it in Edwin Newman's popular books on language from some years ago.

(Tip #1:  Referring to Edwin Newman makes you sound old.)

 A few years ago, a CBS news executive, describing how baffled he was by the changes in popular attitudes toward news, said "Send me a telegram so I can get it."  I think telegrams were still available at that time, but if you're questioning why you don't understand current tastes, the fact that you use the word "telegram" should be your first clue.

Of course, these things come and go.  I'm trying to figure out why we still refer to "dialing" a phone, when phones haven't had dials for years. (Same goes for TVs - "Don't touch that dial!")  Maybe it's phone calls themselves that are becoming archaic; everybody "texts" these days, don't they?

We all know that using the word "record", as in the old vinyl discs, is a sign of your age (although I understand they're making a comeback).  However, have you considered the word "album", which many of us use in its place?  It's been a long time since I bought an entire collection of songs by one artist marketed as an album, since I've been buying music on iTunes for some years now.  I don't even play music that way anymore - it's all shuffled.  That usage of "album" may also be on its way out.

 And what about "column", as in "Have you read Frank Rich's latest column?"  Who besides old codgers reads newspapers anymore?  Yes, web pages have columns, but we don't talk about them that way.  Even referring to news stories that way may reveal your age, such as saying that something's been "in the papers".  I do think that paper itself is going to be with us for a while, so we're probably safe with other uses of the word.

For how much longer will we be using "film"?  It won't be long before movies aren't shot on film at all, and photo film is already a dinosaur.  Kodak stopped making film a few years ago, and Polaroid recently  stopped making theirs.

(Tip #2: Referring to Polaroid makes you sound old.  Doubly so if you mention Land.)

I'm not sure I know how to talk to young people anymore.  Maybe I should just shut up.