submitted 1 day ago by ashenone@lemmy.ml to c/sciencefiction@lemmy.world

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I'd love to hear about your favorite concept or idea you've read about or seen in scifi media.

My personal favorite is the Conjoiner Drive out of the Revelation Space series. These ship drives are dual drives on either side of a lighthugger and have a living being inside the drives to act as a supercomputer, which holds a wormhole open inside the drives. The wormhole links far in the past to the big-bang and uses the energy from the big-bang for propulsion.

In most scifi I've come across wormholes are used for FTL travel, and I thought this was such a unique and creative use of a wormhole it has stuck with me for years after reading about it.

So what are your favorite devices or ideas that have come out of scifi media?

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[-] Underwaterbob@sh.itjust.works 11 points 1 day ago* (last edited 13 hours ago)

A couple from from Douglas Adams' Hitchhiker's Guide to the Galaxy series have always stood out to me:

The Infinite Improbability Drive is used to propel a spaceship by means of increasing improbability to infinity. It ramps up improbability at your departure point until you are literally everywhere at once since everything is possible, then ramps it back down leaving you at your destination. The offshoot being a whole lot of highly improbable other things happen in the vicinity.

The Total Perspective Vortex is a machine that upon entering gives one a perfect sense of perspective of the entirety of existence (which it derives from a piece of cake.) No one emerges sane. It was invented by a guy to get his wife to stop nagging him.

this post was submitted on 12 Jul 2026

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