If somebody from 1973 looked at what was on a dormitory message board in 1993, the slang would have changed a little bit since the era of "Love Story," but they would understand what was on that message board. Take that person from 1993 — not that long ago, this is "Bill and Ted's Excellent Adventure" — those people. Take those people and they read a very typical text written by a 20-year-old today. Often they would have no idea what half of it meant because a whole new language has developed among our young people doing something as mundane as what it looks like to us when they're batting around on their little devices.
McWhorter, John. Txtng Is Killing Language. https://www.ted.com/talks/john_mcwhorter_txtng_is_killing_language_jk.