Science fiction ideas
For an example of this 'flipping', here's a letter I wrote to New Scientist recently which has now been published in their letters page:
In your recent article 'artificial tendons help you walk' (issue 2953, pg21), Yong-Lae Park and colleagues of Carnegia Mellon University made 'a robotic device with artificial muscles that could help people with cerebral palsy strengthen their foot and ankle muscles'. There may be another potential use for such robotic devices; helping ordinary people develop their muscles (get ripped) without having to actually move their limbs themselves. In the future, someone may simply climb inside a full-body version of the device and develop a bodybuilder physique without (literally!) lifting a finger.
For anyone keen to find new ways to come up with creative ideas for stories, I definitely recommend they try this 'flipping' approach. It has a Zen Buddhism element to it in the sense that you need to break out of the predictable way of thinking about a story, invention or place. Jokes and humour also follow this approach, flipping an idea around in such a way that it is interesting, but totally unexpected. It's also great fun!
Producing ideas this way can actually influence the future. The lateral-thinking ideas of science-fiction writers have inspired engineers to make the very items they conjured up in their stories. Arthur C. Clarke famously predicted the usefulness of orbitting satellites and Douglas Adams pointed out how Digital Audio Compact Discs might be rather useful for computer data storage. Perhaps someone will read my letter and in five-years' time, start a company that makes robotic suits that turn their owners from couch potatoes into muscle-bound Adonis's? I've no idea, but it's an interesting idea. :-)