Eigen-subgenres of SF
Space travel
Time travel
Alternate universes
Identity travel
Simulation
Scale travel
Robots
Super-intelligence
Sub-intelligence (microbes)
Enlightenment
Endarkenment
Death
Hell is other people
Collapse
Matter transformation
Personhood
What am I missing?
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HHG has almost all these. As does Culture I think.
Plus a few more.
What’s the Babel fish? Design fiction?
Speculative physics... improbability drive
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Its inclusion within SF is debatable, but uchronia / alternate history would be another (it's markedly distinct from both time travel and alternate universes)
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Pending apocalypse
VR
Pandemic
Cyberpunk
Frankenstein’s monster
Looming apocalypse
Also (on another track):
Gothic horror
Detective noir
Colonial travel journals
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