Line #35 UsefulNotes/FermiParadox


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2	%% Please note: this is a Useful Notes page, not a trope. Examples should be limited to works that explicitly discuss or reference the paradox itself. Examples which merely provide a particular solution should be listed on one of the trope pages; either AbsentAliens or InivisibleAliens.
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9	->''Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.''
10	-->-- '''Creator/ArthurCClarke'''
11
12	The Fermi Paradox is an observation/question by physicist Enrico Fermi: The universe is very old. Thus far we only know of one planet conducive to life (Earth), and life did indeed arise there, suggesting that wherever life ''can'' arise, it eventually ''will.'' Given the unimaginable size of the universe, there should be millions of planets with life scattered out there, and surely thousands at least in our own galaxy. And even without FasterThanLightTravel, an intelligent spacefaring species should be able to spread across the galaxy in a relatively short amount of time.
13
14	So where is everybody?
15
16	We should be able to see all kinds of signs of intelligent alien life when we look at the stars, or possibly even evidence of alien life visiting Earth. But we don't.
17
18	There are numerous proposed solutions to this question, which break down into three broad categories:
19
20	* AbsentAliens is [[OccamsRazor the simple solution]], and makes for a fairly straightforward story: the entire universe (or at least our galaxy) is essentially uninhabited, and out there for us to settle freely. The main issue here is that, as stated above, life should be everywhere. In fact, the Rare Earth hypothesis has the opposite premise to the Fermi paradox: several key factors had to take place for Earth to harbor life first, and multicellular life later. Those factors may happen elsewhere, but all of them at once? And we haven't yet fully figured out how life appeared in the first place, so the requirements may be even higher. Life may not be so simple after all. Another solution to this argument that often pops up is that, as the universe is still very young, with a very, ''very'' long time left where stars and planets can continue to form, life may be scarce at this point in time, and humans are among the handful of {{Precursors}} who will first set out to explore space. If that is the case, then it's up to us to survive, somehow not destroy ourselves, and expand our reach to prove to other potential space-faring races that it can be done - no pressure, then!
21	* InvisibleAliens is more tricky, as there may be all kinds of reasons we might not see the aliens that are out there. Even if life is common, ''intelligent'' life might be rare for any of a number of reasons. And even if intelligent life is common, it might be hiding, or it might not last very long. If they're bizarre StarfishAliens, we may simply not recognize what we're looking at. If they're SufficientlyAdvancedAliens, we may not even have discovered the technologies required to detect them.[[note]]Currently the primary method of searching for aliens is to listen for possible extraterrestrial radio transmissions. But if alien civilizations tend to only use radio for a brief time before moving on to some other technology we haven't conceived of yet, there would be only be a brief window to detect any given planet's transmissions. Additionally, our own radio broadcasts increasingly use technologies such as spread spectrum and compression that make them look more and more like noise-- though Earth would still be notably generating an unusual amount of RF energy.[[/note]] And if they're more than sufficiently advanced, their intelligence might have led to some sort of [[AscendedToAHigherPlaneOfExistence transcendence]] that we can't detect, even in theory. Alternatively, they may be perfectly visible already, but TheMenInBlack are making sure the general public doesn't realize it, or the aliens are so good at disguising themselves that we'd never be able to find out.
22	* [[AfterTheEnd Dead Aliens]] is another simple, but much more terrifying solution to the Fermi Paradox. The reason we haven't detected alien life is because they're all dead, wiped out from whatever evolutionary, cultural, or technological barrier that they couldn't overcome. This barrier is known as "Great Filter," a threat orders of magnitude so powerful that it destroys nearly every species that it encounters. The conclusion of this solution often goes one of two ways depending on where the filter was or will be in our planet's timeline. Either it's behind us, which means HumansAreSpecial and we managed to succeed in the cosmic game of life against all odds; or it's ahead of us, which means we are doomed and, [[YouAreAlreadyDead for all intents and purposes, good as dead]].
23
24	It is also possible that the road between a sterile rock and a space-faring civilization has filters along the way, which cut down the huge numbers the Fermi paradox takes for granted. Those can be either filters that we have crossed ourselves, or filters that are still ahead of us. A filter that we would have crossed is the one of self-awareness and creation of technology. Over five billion species existed on Earth, and a single one, us, has crossed it. A potential filter ahead of us are the limits of technology. Although technological advances are growing at a huge speed, there are some things (time travel, teleportation, faster-than-light speed) that may be forever beyond the reach of human ingenuity or the materials at our disposal.
25
26	The Fermi paradox has also been presented as one of the arguments against the [[https://en.wikipedia.org/wiki/Steady_State_theory Steady state theory,]] that states the Universe has existed forever as we know it. With an infinite amount of time behind it -- no matter how rare truly advanced space-faring species were -- sooner or later, not one but many would appear and we'd see evidence of their existence.
27
28	Related to the paradox is the [[http://en.wikipedia.org/wiki/Drake_equation Drake equation,]] one attempt to quantify the elements required to actually discover other intelligent life forms out there. The Drake Equation has been criticized because most of its terms are unknown, leaving it to individual discretion. Depending on the numbers you put in, the number of intelligent species per-galaxy as predicted by the Drake Equation can be anywhere from millions to less than one. In the end, these terms can never be known for sure until after we resolve the Fermi Paradox one way or the other: either by finally contacting an alien civilization, or by exploring enough of the universe to say convincingly that they don't exist.
29
30	Website/TheOtherWiki has [[http://en.wikipedia.org/wiki/Fermi_paradox more details.]]
31
32	Note that technically, Fermi was [[http://blogs.scientificamerican.com/guest-blog/the-fermi-paradox-is-not-fermi-s-and-it-is-not-a-paradox/ actually pessimistic about interstellar travel, and it isn't technically a paradox.]]
33	----
34	!! Works that mention or discuss the paradox:
35
36	[[foldercontrol]]
37
38	[[folder:Comic Books]]
39	* ''ComicBook/UltimateGalactusTrilogy'': The ComicBook/UltimateMarvel universe had a massive and public alien invasion at the end of ''ComicBook/TheUltimates2002'', 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 ClassifiedInformation, and Richards does not have clearance to know about them.
40	* ''ComicBook/FantasticFourLifeStory'': 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.
41	[[/folder]]
42
43	[[folder:Literature]]
44	* Discussed in ''Literature/AxiomsEnd'' and its sequel, ''Truth of the Divine''.
45	** 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. [[spoiler:The amygdalines propagandize that they are the only intelligent life there is, and Ampersand believes that they'll sterilize Earth rather than let {{human\|s Advance Swiftly}}ity expose this axiom as false]].
46	** 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 FasterThanLightTravel.
47	* Creator/StephenBaxter's three ''Manifold'' novels investigate three different solutions (using the same characters in each novel):
48	** ''Literature/ManifoldTime'' assumes AbsentAliens.
49	** ''Literature/ManifoldSpace'' assumes intelligent races don't last long.
50	** ''Literature/ManifoldOrigin'' assumes each universe in a multiverse has its own unique intelligent race.
51	* A favorite subject of Creator/DavidBrin's:
52	** [[http://www.davidbrin.com/xenology2.htm Xenology: The Science of Asking Who's Out There]] is an essay on the subject.
53	** ''Literature/{{Existence}}'' discusses the paradox at length, especially in the chapter headers.
54	** He has mentioned that it was part of the inspiration for the ''Literature/{{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.
55	* ''Literature/TheDarkForest'' offers a rather [[CosmicHorrorStory cynical]] answer to the paradox: [[spoiler:due to the extreme difficulty of communicating across the gulf of space, the relative ease of StarKilling, and the need for as much resources as you can get in the face of the Universe's inevitable heat death, alien civilizations invariably [[DoUntoOthersBeforeTheyDoUntoUs 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, [[GoodIsNotSoft 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]].
56	-->'''Luo Ji''': In this forest, hell is other people.
57	* "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 [[InYourNatureToDestroyYourselves kill themselves off]], so they can come in after the radiation has died down and salvage all the minerals they've dug up. They're rather embarressed when humanity remains alive long enough to make FirstContact.
58	* Discussed by an astronomer and a possible answer provided in ''Literature/VariableStar''. [[spoiler: As a GenerationShip 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 AbusivePrecursors style.]]
59	* ''Literature/MoreInformationThanYouRequire'' proposes a solution: that the aliens are merely very far away. Possibly even... ''on other planets''. It's also implied that [[BeethovenWasAnAlienSpy Fermi himself was an alien.]]
60	* Creator/AlastairReynolds' Literature/RevelationSpace universe at first appears to be a case of AbsentAliens 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...
61	* In Creator/CharlesStross's ''Literature/AColderWar'' short story, some characters discuss the fact that they're pretty sure they've solved why the paradox exists. [[CosmicHorrorStory It's not very pleasant.]]
62	* This is brought up by one of the inhabitants of a [[spoiler:failed]] Tau Ceti colony in Creator/KimStanleyRobinson's ''Aurora''. His answer is that [[spoiler:intelligent life, ''[[HumansAreMorons 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]].
63	* Grant D. Callin's ''A Lion on Tharthee'' lands on the "Earth is a Fishbowl", as they'd been watching Earth.
64	* {{Discussed}} in Creator/RykESpoor's ''Literature/GrandCentralArena'' 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 NameDrop the paradox.
65	* In ''Galaxas'' by Creator/StephenBaxter, it turns out that we've never seen any sign of another intelligence propigating through the galaxy the way we would because [[spoiler: 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.]]
66	[[/folder]]
67
68	[[folder:Live-Action Television]]
69	* ''Series/OdysseyFive'' begins with an EarthShatteringKaboom 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.
70	[[/folder]]
71
72	[[folder:Music]]
73	* The band Music/TubRing has albums named ''Fermi Paradox'' and ''Drake's Equation''.
74	[[/folder]]
75
76	[[folder:Video Games]]
77	* ''Videogame/DeadSpace'' resolves the paradox in the name. No advanced life has been found because... well, [[spoiler: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]].
78	* ''VideoGame/FinalFantasyXIV'' 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.
79	* One of the attacks used by the FinalBoss of ''VideoGame/KirbyAndTheForgottenLand'', in which they [[spoiler:fling a giant meteor made of space junk that's nearly the size of the entire ''screen'' through a [[ThinkingUpPortals dimensional rift]]]], is called "Fermi Paradox Answer" in the Japanese guidebook. Said FinalBoss is [[spoiler:the newly completed body of a [[AliensAreBastards sociopathic alien conqueror]]]], so it's fitting.
80	* ''Franchise/MassEffect'' has multiple alien species that have all been spacefaring for roughly 2000 years. However, for the most part, they are [[AlienNonInterferenceClause 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 [[PortalNetwork network of lightspeed gateways]] to achieve FasterThanLightTravel. 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 BugWar in the past caused the [[FictionalUnitedNations 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]] Specifically, Charon, one of the moons that orbits Pluto[[/note]] until the discovery of an alien technology archive on Mars showed them how to reactivate it.
81	** The other reason is that every 50,000 years or so, an [[MechanicalAbomination unimaginably ancient and powerful machine race]] called the [[AbusivePrecursors 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.
82	* ''VideoGame/Prey2017'' 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''.
83	[[/folder]]
84
85	[[folder:Web Animation]]
86	* ''WebAnimation/ExtraCredits'' devotes [[MultiPartEpisode a two-parter]] to this subject and the Drake Equation. Available [[http://www.penny-arcade.com/patv/episode/funding-xcom-part-1 here]] and [[http://www.penny-arcade.com/patv/episode/funding-xcom-part-2 here.]]
87	* ''WebAnimation/{{Kurzgesagt}}'' has [[https://www.youtube.com/watch?v=sNhhvQGsMEc two]] [[https://www.youtube.com/watch?v=1fQkVqno-uI episodes]] about the paradox.
88	[[/folder]]
89
90	[[folder:Web Comics]]
91	* In ''Webcomic/AMiracleOfScience'' Mars re-established contact with the rest of humanity after going out into the universe and finding no aliens. [[spoiler:They were all dead.]]
92	* One strip of ''Webcomic/{{xkcd}}'' suggests that the solution to the paradox is that [[http://xkcd.com/962/ fun trumps survival.]]
93	** [[http://xkcd.com/1377/ Another]] offers an alternative solution, [[spoiler: they're all hiding]].
94	* The paradox is brought up in ''Webcomic/SchlockMercenary'' as a concept that has been largely disregarded in the thousand years since FirstContact, but, after hearing evidence that [[spoiler: 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 [[spoiler:just fled the galactic disc and hid from all sight because they were terrified of the idea of the other two coming by]]".
95	* ''Webcomic/{{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 EldritchAbomination appears, telling them they have mastered everything in their universe, and that they may undergo total extinction to know the final secret. [[MyDeathIsJustTheBeginning They accept.]]
96	* The paradox is lampooned in ''Webcomic/FreeFall'': 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...
97	-->'''Sam:''' There is no Fermi Paradox! Every time the aliens make it to Earth, the cows get them!
98	* In ''[[Webcomic/TheInexplicableAdventuresOfBob 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.
99	** [[https://bobadventures.thecomicseries.com/comics/1134 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. [[{{Pun}} A Furmese pair o' ducks.]]
100	* ''WebComic/SaturdayMorningBreakfastCereal''
101	** The strip [[https://www.smbc-comics.com/comic/monkey "Monkey"]] has an alien explain that aliens are not showing themselves to humans because humans are considered unstable and dangerous.
102	** [[https://www.smbc-comics.com/comic/fermi-paradox "Fermi Paradox"]] has {{God}} explaining that it's because this world is hell (for whole sapient species, apparently) and humanity is the only species to have destroyed itself and gone there yet.
103	--> '''Human''': "Honestly it doesn't seem to bad."
104	--> '''God''': "I keep making it worse and you things keep adjusting!"
105	** ''[[https://www.smbc-comics.com/comic/prime 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.
106	[[/folder]]
107
108	[[folder:Web Original]]
109	* In ''Literature/VeilOfMadness'', 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). [[spoiler:They do eventually discover sentient aliens outside of the Veil, but due to various unfortunate events, everyone outside of the Veil ends up being [[TheDreaded 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]].
110	* ''Literature/{{Starsnatcher}}'': A DiscussedTrope through a lot of the story. Becomes a plot point near the end. [[spoiler:The reason why the Great Filter exists is that all advanced civilizations eventually get wiped out by a bunch of SufficientlyAdvancedAliens 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.]]
111	* ''Website/SCPFoundation:''
112	** This is a central theme in the Spanish-speaking canon [[http://lafundacionscp.wikidot.com/oem-hub Observando Estrellas Muertas]] [[note]] Observing Dead Stars [[/note]].
113	** 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. [[spoiler: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. [[YouAreAlreadyDead 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]].
114	* WebVideo/IsaacArthur has a whole [[https://www.youtube.com/playlist?list=PLIIOUpOge0LulClL2dHXh8TTOnCgRkLdU series of videos]] discussing various plausible reasons why we don't see signs of alien civilizations going out and building a DysonSphere around every star in the galaxy.
115	* One Platform/{{Tumblr}} post {{parodied}} the Fermi Paradox with what its author called the [[https://www.tumblr.com/jonnywaistcoat/740667935433080832/i-low-key-love-the-fact-that-sci-fi-has-so "'Fool in a Field' theory"]]:
116	--> ''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. "''[[InsaneTrollLogic Robots have killed them all!]]''"''
117	[[/folder]]
118
119	[[folder:Other]]
120	* Creator/GeorgeCarlin half-jokingly suggested that we haven't discovered aliens because they know exactly [[HumansAreTheRealMonsters how bad we are]] [[HumansAreMorons as a species]] and are actively avoiding us.
121	* ''ComicStrip/CalvinAndHobbes'' suggested the same thing:
122	-->'''Calvin:''' I think the surest sign of intelligent life in the universe is that none of it has ever tried to contact us.
123	* As did Eric Idle's "Galaxy Song" Film/MontyPythonsTheMeaningOfLife'''
124	-->''And pray that there's intelligent life somewhere up in space...\
125	...[[NoIntelligentLifeHere 'cos there's bugger-all down here on Earth]]''
126	[[/folder]]

Context UsefulNotes / FermiParadox