Some of science fiction's predictions have passed fitfully into the present; video phones and geostationary satellites for example. Others seem destined to remain forever in the hereafter, despite being almost universal in movies and literature. The list will be familiar: jetpacks, food pills, silver clothes with giant collars.
One technology, though, resurfaces every few years and makes it to market, only to disappear into the morass of nostalgia soon after. These are 3-D displays, attempts to turn boring old flat telly into a depth-charged experience. Some products failed because they were junk, others just fade from view and resurface years later. This is a list of the most notable flops.