For generations science fiction writers have helped to shape the future with their imaginations. In his classic novel From the Earth to the Moon, Jules Verne wrote a fictional account of traveling to space nearly a century before it actually happened. What’s more, radar, geostationary satellites, and powerful computers that fit in your pocket were all once solely the domain of science fiction until a few visionary people took it upon themselves to bring them into reality.
Nevertheless, not every futuristic gadget or concept dreamt up by sci-fi writers is destined to be actualized. In fact, some of their notions are deliberately meant to be laughable. But be they plausible or preposterous, the 12 theoretical ideas presented here are undoubtedly some of the coolest ever conceived.