This came up in a discussion on the Regarding the Trivia Namespace
Fighteer (rightfully) brought it up that it's Trivia
as defined; its definition is that works set in the future have technology past what we actually got when that year rolled around. Like Fighteer said, there's no way for the writers of the work to know that stuff. Basically the opposite of Technology Marches On
However, it's use is almost invariably "man, I want flying cars/jetpack/hoverboard," which certainly wouldn't be Trivia. Look at the examples on the page. Almost every example has nothing to do with Speculative Fiction
or works that are set in the future, they're simply people lamenting that we don't have jetpacks yet as a stock gag. The closest the description comes to describing that is a character saying something to that effect after being transported to the future from the past.
It seems like we've got two tropes, one for people lamenting the lack of advanced technology, and another Trivia item where a work inaccurately portrays the future.
If it is split, I Want My Jetpack
should probably be the "Weren't we supposed to have jetpacks by now?" trope, and the trivia item should have the new name.
edited 20th Mar '14 1:55:28 PM by Larkmarn