Fermi Paradox - TV Tropes

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.

• Ultimate Galactus Trilogy: The Ultimate Marvel universe had a massive and public alien invasion at the end of The Ultimates (2002), but Reed Richards still considered the paradox to be valid because humanity had seen a single alien species, and there should be many more. When Nick Fury informed him about Gah Lak Tus, a threat that destroys whole planets, he found the answer: humanity does not know about alien races because this Gah Lak Tus destroys them. Note, however, that humanity does know about many other alien races, but SHIELD keeps them as Classified Information, and Richards does not have clearance to know about them.
• Fantastic Four: Life Story: Reed compares the question about aliens with that of a deer asking where are the hunters. Once you find the answer, it's too late. Humanity is safe by not knowing about alien races. Note that he was in outer space he sensed Galactus for a moment, but he still was not sure of what it was, and did not mention him (although he thought about him) when discussing the paradox on TV.

• Calvin and Hobbes mentioned it while simultaneously taking a jab at humans:

  Calvin: I think the surest sign of intelligent life in the universe is that none of it has ever tried to contact us.

• Eric Idle's "Galaxy Song" in Monty Python's The Meaning of Life''':
• Ad Astra revolves around a journey to a project established at the edge of the solar system which was intended to scan as much of the known universe as possible with as little interference as possible in order to try and settle the question once and for. In thirty years, they haven't found anything, and the only remaining survivor of the project — who murdered everyone else when they tried to go home — has gone utterly mad. It's all but outright stated to be a universe of Absent Aliens, or at least that if intelligent life exists anywhere it is so far away that to all practical intents and purposes it might as well not exist at all.

• Discussed in Axiom's End and its sequel, Truth of the Divine.
  • When asked about the Great Filter — a hypothetical barrier that prevents intelligent life from colonizing the galaxy — Ampersand claims that intelligence is extremely rare, and that only two planets in the known universe (Earth and the amygdalines' ancestral homeworld) have produced sapient life (there are actually three alien species, but this is because after the amgydalines' ancestors developed space flight they later diverged into three different species). The amygdalines propagandize that they are the only intelligent life there is, and Ampersand believes that they'll sterilize Earth rather than let humanity expose this axiom as false.
  • In the sequel, Nikola further reveals that only a tiny portion of the Orion Arm of our galaxy has life of any kind; the rest of the galaxy, and the entirety of Andromeda and the Local Group, are completely sterile. Humans and amygdalines are the only sapient species within this bubble of life-supporting planets, and while life could exist elsewhere in some hypothetical distant galaxy, the rate of the universe's expansion means that neither species has any hope of encountering it without developing Faster-Than-Light Travel.
• Stephen Baxter's three Manifold novels investigate three different solutions (using the same characters in each novel):
  • Manifold: Time assumes Absent Aliens.
  • Manifold: Space assumes intelligent races don't last long.
  • Manifold: Origin assumes each universe in a multiverse has its own unique intelligent race.
• A favorite subject of David Brin's:
  • Xenology: The Science of Asking Who's Out There is an essay on the subject.
  • Existence discusses the paradox at length, especially in the chapter headers.
  • He has mentioned that it was part of the inspiration for the Uplift series. Where every space-faring race is governed by a bureaucracy that tightly controls colonization rights and which declared Earth's sector off-limits millions of years ago.
• Arthur C. Clarke in his The Space Odyssey Series postulates that "life" is actually very common throughout the universe, but it is exceedingly rare for intelligent life to survive and emerge after millions of years of evolution. Because sapient life is so rare and fragile, the ancient Precursor aliens (called "the Firstborn") made it a point to safeguard and promote its development whenever possible and left behind the Monoliths as tools to oversee these projects. Of course, the Monoliths do have the option to destroy one sapient species to save another, when they deem humanity too warlike and irresponsible to co-exist with the caveman-level Europans.
• The Dark Forest offers a rather cynical answer to the paradox: due to the extreme difficulty of communicating across the gulf of space, the relative ease of Star Killing, and the need for as much resources as you can get in the face of the Universe's inevitable heat death, alien civilizations invariably annihilate one another upon detection out of paranoia and competition. The main character compares the universe to a dark forest full of hunters: any species with a sense of self-preservation cannot risk exposing themselves without being immediately shot on sight by the hunters lurking nearby. Likewise, however benevolent your species might otherwise be, you can't risk not firing at another hunter for fear of that hunter discovering and coming after you sometime in the future.

  Luo Ji: In this forest, hell is other people.

• "The Fermi Paradox is Our Business Model" is the name of a short story by Charlie Jane Anders. Precursors seed the galaxy with life, then wait in cryogenic sleep while the created species gains sentience, mines their world for metals and radioactive material, then kill themselves off, so they can come in after the radiation has died down and salvage all the minerals they've dug up. They do nothing to nudge this process along: sooner or later all civilizations "Conclude" themselves. They're rather embarressed when humanity remains alive long enough to make First Contact.
• Discussed by an astronomer and a possible answer provided in Variable Star. As a Generation Ship leaves Earth, the astronomer on the ship sees something odd about the sun. A quarter of the way through their trip, the sun explodes, destroying the entire solar system. The inhabitants of the ship conclude that this was done on purpose by an alien race, resolving the paradox Abusive Precursors style.
• More Information Than You Require proposes a solution: that the aliens are merely very far away. Possibly even... on other planets. It's also implied that Fermi himself was an alien.
• Alastair Reynolds' Revelation Space universe at first appears to be a case of Absent Aliens as humanity finds many worlds with life, and the ruins and relics of numerous advanced interstellar civilizations, but only a few rarely encountered, sparsely distributed interstellar species. As the series progresses, however, it turns out there's a very good reason for this...
• In Charles Stross's A Colder War short story, some characters discuss the fact that they're pretty sure they've solved why the paradox exists. It's not very pleasant.
• This is brought up by one of the inhabitants of a failed Tau Ceti colony in Kim Stanley Robinson's Aurora. His answer is that intelligent life, truly intelligent life, would have no interest in interstellar expansion having recognized the extreme dangers and difficulties such an effort entails and would be content to stay within their home star system in the environments that they were actually adapted to survive in.
• Grant D. Callin's A Lion on Tharthee lands on the "Earth is a Fishbowl", as they'd been watching Earth.
• Discussed in Ryk E. Spoor's Grand Central Arena when an alien scientist notes that none of the resident civilizations of the titular Arena have met each other through sublight means in the "normal universe", prompting a human character to Name Drop the paradox.
• In Galaxas by Stephen Baxter, it turns out that we've never seen any sign of another intelligence propigating through the galaxy the way we would because the diffuse galaxy-spanning intelligence of the title knocks back any race that tries to leave their solar system, for reasons the characters can only speculate about. And we've never seen any sign of the diffuse galaxy-spanning intelligence because it didn't want us to ... until it was time to knock us back as well.
• In The Thousand Earth's by Stephen Baxter it turns out we were looking in the wrong place for five billion years. Earth like life is so vanishingly unlikely that we're the only ones in existence but it turns out the Suns themselves are sentient. Something discovered only after five billion years when far future humanity is engaged in stellar engineering they object to. At that point it's made clear humanity is to stay (largely) confined to Sol or be attacked by the thinking Suns. However by this point humanity is immortal and has mastered total energy conversion. As such it collectively shrugs, builds the mega structure of the title and settles down to wait for all the stars to inevitably die, at which point finally alone they'll get on with their plans for the universe.
• In the Bobiverse books, it's revealed that one of the reasons for the lack of spacefaring species is the Others strip-mining all the systems around their home star in order to build their Dyson Sphere. The first thing they do upon arriving to an inhabited system is blast the inhabited planets with gamma-ray blasts to kill off anyone who might interfere with their mining operations. The fifth book reveals the other reason: the Pan-Galactic Federation, consisting of over 100 starfaring species and connected into a vast wormhole network, covered a sizable chunk of the galaxy up until about 2000 years ago, at which point a mass exodus occurred due to the imminent destruction of the Milky Way galaxy in 100,000 years.
• Geoffrey A. Landis' short story ''Vacuum States" offers an explanation for the Great Filter by way of False Vacuum Nucleation, i.e. a shift in the Higgs particle to a lower-energy state that rewrites the laws of physics. Two scientists are debating whether to activate a machine that would harness the Higgs field for energy, either providing humanity with unlimited energy or destroying the universe. The scientist opposed to using the machine cites a vision she had of a similar circumstance playing out pre-Big Bang, where miniscule aliens lived in a very hot, dense universe until one day one of them decided to try a variation of the current experiment, resulting in the Big Bang and destroying their universe at the expense of creating ours. The scientist muses that this may be the Great Filter: once a species reaches a certain level of technological development, it eventually tries to extract energy from the vacuum and inadvertently annihilates existence, with new species arising with each successive universe.

• Odyssey 5 begins with an Earth-Shattering Kaboom for unknown reasons with the only survivors being five astronauts in orbit. They are rescued by an alien explorer who sends their minds back in time. Before that, he explains that he had found dozens of planets with intelligent life having gone through the same, including his own. This highly implies every civilization goes through something in their technological development that leads to their destruction.
• Louis explains the concept to Bea in the second episode of Silverpoint, which is aptly titled Fermi's Paradox.

• The band Tub Ring has albums named Fermi Paradox and Drake's Equation.

• Dead Space resolves the paradox in the name. No advanced life has been found because... well, it's dead. Every advanced civilization has found Markers, been overwhelmed by the Necromorphs, and had their combined biomass formed into a new Brethren Moon, the largest, most intelligent form of the Necromorphs.
• Final Fantasy XIV eventually covers this with the Endwalker expansion. Every other race in the known universe was dead or dying when they were found, which sets up pretty much every main conflict in the entire game.
• One of the attacks used by the Final Boss of Kirby and the Forgotten Land, in which they fling a giant meteor made of space junk that's nearly the size of the entire screen through a dimensional rift, is called "Fermi Paradox Answer" in the Japanese guidebook. Said Final Boss is the newly completed body of a sociopathic alien conqueror, so it's fitting.
• FreeSpace has the Shivans, who may have been an inspiration for the Reapers in Mass Effect - they are also Abusive Precursors, but rather than a limited "culling" they destroy every species they encounter. Various theories were proposed that they might be doing this for resources, for the Evulz, or even like the Reapers as a way of culling galactic civilizations back to a point where they can't destroy themselves or the rest of the galaxy, but no firm answer was given.
• Mass Effect has multiple alien species that have all been spacefaring for roughly 2000 years. However, for the most part, they are discouraged from interfering with intelligent races that have yet to develop spaceflight. Some of them do so anyway for various reasons, but they never did it with humans for the simple reason that they never found us. The Mass Effect Galaxy relies on a network of lightspeed gateways to achieve Faster-Than-Light Travel. However, a large number of these gateways, called Mass Relays, are inactive or dormant, including the only one that links Earth to the rest of the Galaxy. A devastating Bug War in the past caused the Citadel Council to make it illegal to reactivate dormant relays until extensive research has been done to determine where they go in order to prevent a similar war from happening again. The Earth Relay in particular was not only dormant, but it was also covered in so much ice that for centuries, humans thought it was a moon, ^note  until the discovery of an alien technology archive on Mars showed them how to reactivate it.
  • The other reason is that every 50,000 years or so, an unimaginably ancient and powerful machine race called the Reapers, marches in and exterminates all spacefaring species across the Galaxy. In addition, after every cycle of extermination, the Reapers make sure to erase any evidence of themselves along with most archaeological remnants of the races they just wiped out. Only leaving enough evidence for the next cycle to know that there were others before them who mysteriously vanished. The Reapers are not, however, omnicidal maniacs but only target spacefaring species while ignoring pre-spaceflight ones. It's ultimately revealed that the Reapers are automatons given the mandate to "protect organic life from destroying itself by developing synthetic life", who reached the conclusion that the only way to do this was cyclical "culling" of all spacefaring races: by reducing industrial/interstellar civilization back to zero, they prevent them from totally destroying themselves with advanced technology.
• Prey (2017) namechecks the Fermi Paradox, and offers an existentially terrifying resolution: no intelligent life has yet been encountered because the Typhon species evolved to detect and consume all advanced consciousness they come into contact with. Rather than flesh, they eat minds.

• In A Miracle of Science Mars re-established contact with the rest of humanity after going out into the universe and finding no aliens. They were all dead.
• One strip of xkcd suggests that the solution to the paradox is that fun trumps survival.
  • Another offers an alternative solution, they're all hiding.
• The paradox is brought up in Schlock Mercenary as a concept that has been largely disregarded in the thousand years since First Contact, but, after hearing evidence that galaxy-spanning civilizations have risen and fallen many times over millions of years, the idea is revisited. In the end, the answer to the paradox seems to be "some wiped themselves out, others went on wiping out rampages before dying off, and a whole load of them just fled the galactic disc and hid from all sight because they were terrified of the idea of the other two coming by".
• Floraverse: The prologue, which at first seems to be completely unrelated to the rest of the comic, involves a civilization discovering how they are completely alone in their universe. As such, some of them have the idea that other universes may have life, and build a device to transport them there. But right as they are about to activate it for the first time, an Eldritch Abomination appears, telling them they have mastered everything in their universe, and that they may undergo total extinction to know the final secret. They accept.
• The paradox is lampooned in Free Fall: an alien squid (Sqid, if you would) who just so happens to be very tasty to virtually any sort of Terran animal points out that humanity's resilience is, in large part, due to asteroids smacking into Earth and giving more time to evolve: those who got it on the first try have simpler cellular structures. So...

  Sam: There is no Fermi Paradox! Every time the aliens make it to Earth, the cows get them!

• In The Inexplicable Adventures of Bob, Earth is located in the middle of a star-spanning alien empire, and has been since before humanity evolved, but they hide themselves from us because Earth is a nature preserve and humans are wildlife that shouldn't be disturbed.
  • It eventually turns out that this policy was negotiated by a hidden civilization of anthropomorphic animals living on the island of Furmia. Specifically, by two ducks. A Furmese pair o' ducks.
• Saturday Morning Breakfast Cereal

  Human: "Honestly it doesn't seem to bad."

  God: "I keep making it worse and you things keep adjusting!"

  • Prime answers this in the worst way possible. Humanity sending out prime numbers, which are useful for code-breaking, is viewed as the galactic equivalent of giving your hotel room key to everyone you meet. The aliens that point this out showed up just to call humanity skanks.

• In Veil of Madness, the reason humanity hasn't found any aliens is because Earth is smack in the middle of the titular "Veil of Madness", which causes violent insanity in any intelligent life that lives there, usually driving them to extinction. Humanity is the only race to have avoided this (well, one other race hasn't destroyed themselves quite yet, but they're definitely affected and they haven't got out of the Stone Age). They do eventually discover sentient aliens outside of the Veil, but due to various unfortunate events, everyone outside of the Veil ends up being terrified by humanity, who eventually give up trying to correct everyones wrong impressions and play along with their reputation, as it meant everyone would leave them alone and treat them with respect.
• Starsnatcher: A Discussed Trope through a lot of the story. Becomes a plot point near the end. The reason why the Great Filter exists is that all advanced civilizations eventually get wiped out by a bunch of Sufficiently Advanced Aliens referred to as "They". The reason why "They" do this is that they are a Type III civilization who need all of the Milky Way's resources to prosper. They refuse to let another civilization rise to their level and compete for resources with them. Thus, if a civilization becomes advanced enough to attempt interstellar travel, they'll inevitably run into death traps "They" created.
• SCP Foundation:
  • This is a central theme in the Spanish-speaking canon Observando Estrellas Muertas ^note .
  • SCP-3426 is another discussion of the Fermi Paradox, stating that the reason we don't see any aliens is because of a naturally-occurring phenomenon where all planets whose civilizations become sufficiently advanced are killed by reality breaking down at their exact positions. The part about it being natural is a lie. It's heavily implied that it's the doing of the Pattern Screamers, sentient masses of nothingness, who warp reality to conquer these planets and add them to an ever-growing intergalactic empire. Their agents may have already descended to Earth to plot its downfall, as evidenced by several other SCPs confirmed to be part of their kind in some form.
• Isaac Arthur has a whole series of videos discussing various plausible reasons why we don't see signs of alien civilizations going out and building a Dyson Sphere around every star in the galaxy.
• One Tumblr post parodied the Fermi Paradox with what its author called the "'Fool in a Field' theory":

  It goes like this: Humanity is a guy standing in the middle of a field at midnight. It's pitch black, he can't move, and he's been standing there for ages. He's just had the thought to swing his arms. He swings one of his arms, once, and does not hit another person. "Oh no!" He says. "Robots have killed them all!"

• George Carlin half-jokingly suggested that we haven't discovered aliens because they know exactly how bad we are as a species and are actively avoiding us.