@nixCraft heh… heh… That invokes an image of Scooby Doo saying, “rut roh”. But if you think about it this, being 2023, versus 1994 would exactly match us if it were 1970 looking at a paper written during 1941. The question about expiration is a bit odd but I can see how the student may have thought the 1994 paper was ancient. All the while assuming the student wasn’t looking at plagiarism.