I have begun reading Summer Lake by Ekalise because of a recommendation on a thread in the SOL forums.
Early in the story, a character tells a joke about guys with AIDS, saying their most difficult task is "convincing your wife you're Haitian."
I got the joke because I'm old enough to remember the days when people suspected but nobody knew for sure what was causing AIDS. The joke is from that time period.
And that prompts my question. As an author, how careful do you have to be that something you write at the time will become outdated and you run the risk that younger people might not get it.