Line #18 Main/NonSequiturCausality


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3	%% The examples have been alphabetized. Please put any new example in its proper place in the folder rather than at the end.
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6	This trope is for when the changes between two versions of history seem unlikely (even by chaos theory), or even outright impossible, from the particular change in the past. Even if the timeline is set right, there might be some changes that just don't make sense, even by how things were set right.
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8	The key is that you cannot see any direct explanation for the changes. If you cut down a tree in the past and come back to the present to see the stump just sitting there (or maybe replaced with a new, smaller tree), that is not this trope. That's just continuity. This trope is if you knocked a tree down in the past, and upon returning to the present day, the world has devolved into TheApunkalypse, your parents are now otters, and [[MurderArsonAndJaywalking some nearby bench was repainted]]. Just knocking down a random tree shouldn't have resulted in ''any'' of that... except maybe the repainted bench. Maybe it was done in honor of the tree.
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10	This used to be played straight, but as you can tell from our example, you're now far more likely to see it PlayedForLaughs. By the TurnOfTheMillennium, most serious time travel stories began making an effort to have any timeline changes be the result of logical, explainable cause-and-effect to avoid making the TimeyWimeyBall even worse than it is. That isn't to say this trope isn't still done seriously on occasion, but unless the rest of the story is good enough to keep that much needed SuspensionOfDisbelief in place, you can fully expect audiences to raise an eyebrow if a writer attempts to do so.
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12	Compare ButterflyOfDoom, where an innocuous action done in the past results in major negative changes to the present which may or may not be absurdly unlikely. Contrast InSpiteOfANail, where certain things remain constant no matter what changes are made. AlternateHistoryWank may be particularly vulnerable to this, as the author often starts out with an implausible world they want to create and work backward from there.
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15	!!Examples:
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19	[[folder:Comic Books]]
20	* The Shea Fontana ''WebAnimation/DCSuperHeroGirls'' graphic novel tie-in ''Past Times at Super Hero High'' has Harley Quinn steal a pterosaur egg during a time travel trip, which somehow creates a timeline where, among other changes, Vandal Savage has taken over Super Hero High and Doc Magnus has a beard. Harley actually [[LampshadeHanging acknowledges]] that all of this happening as the result of her taking a prehistoric egg makes little sense, but Batgirl gives the rebuttal that the effects on the timeline from changes that seem insignificant are impossible to predict anyway. Batgirl and Harley also later have to fulfill a StableTimeLoop by defending a younger Amanda Waller from Solomon Grundy in the 1980s after finding that their decision to ignore her encounter with Grundy created a timeline where Lucius Fox is principal of the high school in her place.
21	* ''ComicBook/FlashpointDCComics'' has this problem as various individuals are dead and things have led to a pretty big BadFuture. Possibly justified since time was not "changed", but rather ''broken'', meaning things were not meant to be this way. The resolution of the storyline, which reboots the universe as the ComicBook/New52, introduces still more examples of this problem. However, ''Rebirth'' reveals that reason why and it's a ''doozy.'' [[spoiler:Dr. Manhatten of ''ComicBook/{{Watchmen}}'' fame interfered with the DC Universe and among other things, removed from existence the Justice Society of America, starting with Alan Scott.]]
22	* In one issue of ''ComicBook/PS238'', Tyler is shown glimpses of alternate timelines in which he was born with different superpowers. In most, the visible changes make sense as consequences of that Tyler's powers, but there's one where everybody is in the middle of a crisis that [[{{Foreshadowing}} starts up ten issues later in the main storyline]], and there's no obvious reason why it should happen sooner in the other timeline just because Tyler has gravity-manipulating powers.
23	* In ''ComicBook/StarTrekIDW'', the [[Film/StarTrek2009 arrival of Nero in 2233]], changing everything from that point, somehow results in the events surrounding the ''USS Archon'''s [[Recap/StarTrekS1E21TheReturnOfTheArchons crash on Beta III]] being drastically altered. This happened in 2167.
24	* Many issues of Marvel's ''ComicBook/WhatIf'' fall into this trap, where the PointOfDivergence takes place... along with completely unrelated events that '''didn't''' take place in the original story. Essentially some stories become "What if... (event happened differently) '''''but''''' these things were also different?"
25	** In "What If Wolverine Led Alpha Flight?" where the X-Men depart and leave Wolverine with Alpha Flight, but then are randomly shot down by an intercepting aircraft and killed.
26	** In "What If Captain America had formed the Avengers?", which despite being the direct sequel to a much more coherent issue, asks you to make a lot of leaps in logic to make sense of it all.
27	** In "What If the Hulk killed Wolverine" where the death of Wolverine creates a cosmic imbalance favoring chaos and thus the super villain the Adversary is free to imprison Roma and go on to kill many other X-Men, something he never did even when he fought them in the mainstream continuity.
28	** In "What If Professor X became the Juggernaut" the Fantastic Four decide to randomly attack Xavier and the X-Men after the latter trashed the Sentinels that first attacked them, handwaving that Reed Richards was friends with Bolvier Trask, the maker of the Sentinels, resulting in them all losing their powers due to a device that Xavier makes.
29	** In "What If the Marvel Super Heroes had Lost Atlantis Attacks", Set contaminates the world's water supply turning nearly everyone into serpent people (including most of the remaining super heroes and villains), except for about eight random superheroes and villains. No reason is given why these particular eight never drank the water, and why others did, other than for the purposes of the story. Drinking water even transformed Warlock of the New Mutants into a serpent man, even though he's a techno-organic being that doesn't know what liquid water is! You'd think Warlock would be one of those immune, if anything!
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32	[[folder:Films -- Live-Action]]
33	* ''Film/BackToTheFuturePartII'' includes an alternate-1985, in which UsefulNotes/RichardNixon is running for a fifth term and UsefulNotes/TheVietnamWar is still ongoing. All because Biff Tannen learned about the outcomes of all sporting events and made a fortune from gambling! The comic ''Biff to the Future'' makes a valiant attempt at explaining this, starting with Biff buying the ''Washington Post'' in order to control the ''Hill Valley Telegraph'', and immediately sacking Woodward and Bernstein.
34	* ''Film/ItsAWonderfulLife'' mostly avoids this, since most of the differences in the BadFuture where George was never born are things George, as one of the community's most influential voices, would reasonably have been involved in. The one real exception is that it's snowing in the original timeline, but not in the Bad Future. It was most likely done as a visual shorthand for the audience's benefit, but it does make you wonder exactly how George's removal from history could have changed the weather.
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37	[[folder:Literature]]
38	* ''Literature/DirkGentlysHolisticDetectiveAgency'' has a perfectly lampshaded use of the trope. Early in the book, it turns out that in bringing the coelacanth from prehistory to the early 20th century to be rediscovered, the dodo went extinct, and that was the end of a short chain of similar changes. At the end of the book, after [[spoiler:the main characters go back to the dawn of life on earth]], Dirk finds out that [[spoiler:his secretary was still working for him, and a cat that he'd spent the last eleven years searching for had never gotten lost in the first place]].
39	%%* {{Literature/Dragonlance}}'s ''The War of Souls'' trilogy.
40	* In ''Literature/TheHitchhikersGuideToTheGalaxy'', using the Infinite Improbability Drive on the starship ''Heart of Gold'' tends to cause this throughout the universe. That being one reason why it is replaced with the Bistromathic drive.
41	* In Creator/RobertSilverberg's short story "Needle in a Timestack", time travel is common for holidays, so minor changes (your car was a grey Toyota, now it's a silver BMW) are just "the little annoyances of modern life". Unless your wife's first husband is trying to undo his divorce.
42	* ''Literature/ThePowerOfUn'' uses this as well -- the carnival is subtly different (paint colors and such) even though the timeline started changing just that morning.
43	* In ''Literature/TheScienceOfDiscworld II'', the mages' meddling with time (trying to make sure Creator/WilliamShakespeare is born and becomes the great poet he is supposed to be) accidentally results in the first potato being brought to Europe.
44	* ''Literature/{{Snapshot}}'': Even the smallest action by the Snapshot detectives can touch off a chain of events that will completely change what happens in the Snapshot. Davis mentions a time he stayed in his room all day to avoid causing Deviations; he slammed a door too loudly in the morning, waking up a woman who was supposed to sleep through a job interview. The results are so unpredictable that the Snapshot detectives are never blamed for triggering Deviations.
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47	[[folder:Live-Action TV]]
48	* Season 4 of ''Series/{{Eureka}}'': Despite removing one of the town's founders from the timeline in 1947, the biggest changes that occur in the resulting future are that a few people have different jobs, Henry's married, and Jo's not dating Zane anymore. And Allison's kid is no longer autistic. And a statue has changed materials. Strangely, nothing has changed for Beverly, even though [[spoiler:her father was jailed because Grant wasn't there to back him up]]. Near the end of the series, another change is shown: apparently, Henry [[spoiler:is a Consortium agent]] in this timeline.
49	* Many small changes to the barracks and a few minor discrepancies in continuity in ''Series/{{Lost}}'' have been theorized to be because [[spoiler:the time-travelling survivors altered some minute details of the past when the island was shifting through time. These include Rousseau forgetting Jin and Aaron's birth being slightly different.]]
50	* In ''Series/{{Primeval}}'', leaving a couple of Future Predators in the past somehow changes Claudia Brown into Jenny Lewis, gives the team a new HQ, and alters Connor's ''dress sense''. It also added a minor BigBad named Leek. Interestingly, killing an entire tribe of proto-hominids in the distant past did absolutely nothing.
51	* ''Series/RedDwarf'' uses this in "[[Recap/RedDwarfSeasonIIITimeslides Timeslides]]", when [[spoiler:the last change to the timeline puts everything back how it was except that Rimmer is alive. He dies seconds later and the change in his backstory is apparently forgotten]].
52	* ''Series/SaturdayNightLive's'' "Timecrowave" sketch, with host Alec Baldwin, has this crossing over with ButterflyOfDoom ''ad absurdum.'' The titular machine uses time-travel tech instead of microwaves to heat up TV dinners, sending them back to one minute before they were put in. But Alec receives a chicken dinner a minute before he put in a roast beef one, and all hell breaks loose in waves. Among the changes: Alec switches from white to black and back again, Kristen Wiig grows a mustache, a giant tabby cat appears outside the kitchen window, and ([[GodwinsLawOfTimeTravel you guessed it]]) we see that every house on the block has a swastika-adorned flag hanging in front.
53	* ''Series/StargateSG1'': After SG-1 is sent back in time they start a revolution against the Goa'uld, the problem is that the Goa'uld take away the stargate and the alternative SG-1 has to go back in time and put things as they were. When the timeline is corrected, the only difference is that Jack's lake now has fish.
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56	[[folder:Video Games]]
57	* Winning the game in ''VideoGame/DarkFall: The Journal'' [[ResetButton undoes]] something [[SealedEvilInACan unnatural]] that'd happened at the Station Hotel in the 1940s. In the sequel, ''Dark Fall: Lost Souls'', the same hotel [[spoiler: has suffered severe bomb damage from WWII, which hadn't been evident in the previous game. Unless writer Jonathan Boakes is implying that the unbound dark entity had somehow deflected a bomb in the first game's timeline, and did so several years ''before'' this UnseenEvil actually broke loose...]]
58	* ''VideoGame/LifeIsStrange'' goes pretty wild with the consequences of time travel. Max saving her schoolmate from getting shot results in [[spoiler:the entire town being destroyed in a freak tornado a few days later]]. At least the game is aware that there's absolutely ''zero'' logical way to get to that result, and characters theorize (it's never fully confirmed) that it was caused by [[TimeCrash the timeline itself getting freaked out by the change]].
59	* ''VideoGame/MegaManBattleNetwork'' takes place in an AlternateUniverse from the ''VideoGame/MegaManClassic'' series, where more research was poured into networking rather than robotics, and as such most of the [=NetNavis=] in ''Battle Network'' are reimagined versions of Robot Masters from the classic series. Then comes ''VideoGame/{{MegaMan Battle Network 4\|RedSunAndBlueMoon}}'', whose FinalBoss is an alternate [=NetNavi=] version of Duo from ''VideoGame/MegaMan8''... who logically shouldn't ''be'' any different, given that he came from space in both timelines. Later games seemed to realize this, as future [=NetNavis=] were less inspired by Classic-series bosses (although it did start looking more to the ''VideoGame/MegaManX'' series at this point, particularly the duo of [[VideoGame/MegaManX4 Colonel and Iris]]), and SequelSeries ''VideoGame/MegaManStarForce'' completely abandons the idea of reimagining characters from the original timeline in part because of its heavy focus on characters coming from space.
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62	[[folder:Webcomics]]
63	* ''Webcomic/{{Misfile}}'' has an example that starts out being completely impenetrable, though the connection is eventually revealed: When main character Ash wakes up one morning having been [[GenderBender retroactively turned into a girl]], not only is he now female, as far as most of the universe is concerned [[CosmicRetcon he always was]], with resulting changes in his wardrobe, photo albums, relationships... and, strangely enough, the half-completed car he'd stashed in his garage because he couldn't afford an engine for it suddenly has exactly the engine it needs. Eventually it's revealed that his estranged mother -- whom he'd lost touch with in original timeline but had already reconnected with as a girl -- had not only provided her with tons of clothes, she'd also bought her "daughter" a new engine for her racecar, perhaps to assuage the guilt she felt over abandoning her in childhood.
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66	[[folder:Websites]]
67	* ''Website/SCPFoundation'': PlayedForDrama and [[PlayedForHorror Horror]] with [[https://scp-wiki.wikidot.com/scp-2003 SCP-2003]], a time machine designed by the Foundation to find out about possible futures and guide humanity onto the correct path. The problem is, not only are most of the futures they've seen [[BadFuture quite horrifying]], they've also found some people have a disproportionate effect on causality, even for events they're not part of. For example, the birth of a boy in Turkmenistan and the election of a New Zealand Prime Minister both happening on the same day in 2049 lead to a civilization-ending nuclear exchange between Israel and Greater Indonesia in 2058. All attempts to intervene with these two in any way only leads to the war happening sooner. The Foundation has a database on these and similar individuals.
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70	[[folder:Web Videos]]
71	* For his review of ''Film/TheRoom2003'', WebVideo/TheNostalgiaCritic travels to the future. After his returning he sees that the wall behind him now has another colour. Nothing else changed, just another wall. [[UsefulNotes/FurryFandom And he has a tail.]]
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74	[[folder:Western Animation]]
75	* In the ''WesternAnimation/AmericanDad'' episode "The Unincludeds", Steve's various attempts to make Snot popular turn Snot's future self into various bizarre alternates, ranging from a homeless guy, to a prisoner who is blind in one eye, to a trans woman, to a half-human half-turtle mutant, and lastly just a giant turtle.
76	* In the ''WesternAnimation/{{Ben 10\|2016}}'' (2016) episode "Ben Again and Again", Billy Billions attempts to alter time so that he claimed the Omnitrix instead of Ben. When Ben and Gwen follow him, Ben tries to fix the timeline by getting the Omnitrix himself instead of letting his past self get it, but when they try to leave through the wormhole that they entered through, they just end up back in the past as bizarre alternate selves. They appear in medieval gear, then as {{cyborg}}s, and as [[NinjaPirateZombieRobot cyborg pirates]] before Gwen reasons that the Omnitrix is intended for Past Ben and not Present Ben.
77	* The ''WesternAnimation/BunsenIsABeast'' episode "Beastern Standard Time" has Bunsen and Mikey go back in time to the stone age when their intentions were to go back to just before they were tardy so that Bunsen isn't late for school for a third time and able to enjoy Donut Day. Before returning to the present, Mikey gives the donut he was given to a caveboy that becomes interested in it. The pair later find that giving the caveboy the donut has resulted in Muckledunk becoming a donut-themed town called Donut Dunk, plus Amanda Killman is ruler of the town. Horrified by this change, Mikey and Bunsen prevent this timeline from happening by going back to the prehistoric era and replacing the donut given to the caveboy with an apple.
78	* In one episode of ''WesternAnimation/CowAndChicken'', they go to the arcade and get on a ride that takes them back to the dawn of creation. Cow drops a quarter in the primordial soup, resulting in mankind having quarters for heads when they get back to the present.
79	* ''WesternAnimation/TheFairlyOddParents'':
80	** In "Father Time", Timmy went back to help his Dad win the trophy he accidentally melted. He comes back to find that the Internet is called "the Timmy" because Cosmo told someone to call it that. [[RuleOfFunny Somehow]], this also resulted in "Internet" being Timmy's name.
81	** In "[[ItsAWonderfulPlot It's a Wishful Life]]", it turns out that if Timmy had never been born, AJ would have hair, Elmer wouldn't have a boil and a non-braceface Chester would have Timmy's fairy godparents. [[spoiler: It turns out to actually be a test by Jorgen to see if Timmy was selfish enough to wish himself back after seeing this.]]
82	** In "I Dream of Cosmo", Timmy's Dad asks Cosmo, who was suffering from amnesia and thinking he was a genie, to wish his neighbor Dinkleberg never existed. Despite [[DumbassHasAPoint Cosmo's objection that it could result in this trope]], he goes through with it, and they enter a post-apocalyptic world where somehow Timmy's Mom is a two-headed dragon.
83	* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'': In ''Billy and Mandy's Big Boogie Adventure'', the BadFuture versions of Billy and Irwin go back in time to stop Mandy from taking over Endsville. They [[spoiler:succeed... only to find that [[TheDitz Fred Fredburger]] is now in her position.]]
84	* On ''WesternAnimation/FamilyGuy'', Peter went back in time to relive his teenage years and as a result, Lois ends up married to Quagmire and Peter is married to Molly Ringwald. Also, Al Gore is the President, we have universal health care, no crime or poverty, non-polluting flying cars that run on vegetable oil, and Dick Cheney, Antonin Scalia, Karl Rove and Tucker Carlson are all dead. But worst of all, Chevy Chase is hosting ''Series/TheTonightShow''. Peter manages to fix everything, but [[WesternAnimation/AmericanDad Roger Smith]] is now a member of the Griffin household.
85	* In the ''WesternAnimation/{{Freakazoid}}'' episode "Freakazoid is History," Freakazoid is accidentally sent back in time to Pearl Harbor. He averts Japan's surprise attack and returns to the present. Much of the world seems the same, but Creator/RushLimbaugh is a bleeding heart liberal, Creator/SharonStone can act, no Creator/ChevyChase movies exist, cold fusion works, and [[WesternAnimation/PinkyAndTheBrain Brain]] is the president (with Pinky as the Air Force One pilot).
86	* Inverted in the ''WesternAnimation/{{Futurama}}'' episode "The Late Philip J. Fry". Professor Farnsworth assassinates Hitler in the early 1930s in one timeline and accidentally assassinates Eleanor Roosevelt in another, but in both cases the year 3010 they return to appears to be exactly the same, except for being ten feet lower and five feet to the right.
87	* {{Downplayed\|Trope}} in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episodes "The Cutie Re-Mark", [[Recap/MyLittlePonyFriendshipIsMagicS5E25TheCutieRemarkPart1 Part 1]] and [[Recap/MyLittlePonyFriendshipIsMagicS5E26TheCutieRemarkPart2 Part 2]]. Starlight Glimmer travels back in time and prevents Rainbow Dash from performing her first Sonic Rainboom, which prevents the Mane Six from becoming friends -- and allows several villains to conquer Equestria since the Mane Six were the ones to defeat those villains in the first place. That makes sense. Where it gets weird is when changes in ''how'' Starlight prevented that first Sonic Rainboom somehow result in a completely different villain triumphing each time, and wildly different alternate timelines as a result. So when Starlight casts a freezing spell on young Rainbow Dash, that causes a timeline where Equestria is in a drawn-out war with King Sombra and the Crystal Empire. But when Starlight talks Rainbow out of holding the race in the first place, that creates a timeline where changelings have overrun Equestria. And so on.
88	* A ''WesternAnimation/RobotChicken'' sketch parodies Terminator by having the Terminator invoke this with random actions in the past that somehow alter the circumstances of the Resistance base as they prepare to send back their own agent. Among other changes are John Connor becoming Juan Carter, then Juan''ita'' Carter, and general chaos breaking loose as objects and people in the base transform randomly, such as becoming a herd of raptors hunting ballroom dancers before they all turn into butterflies.
89	* Many of the timelines seen in ''WesternAnimation/TheSimpsons'' episode "Treehouse of Horror V" (e.g. donut rain as a result of killing dinosaurs). The story ends with everything normal, except for people having long, forked, prehensile tongues.
90	* In ''WesternAnimation/TeenTitansGo'', Cyborg and Beast Boy find themselves stuck 30 years in the future after having a staring contest to decide who gets the last slice of a pizza. Eventually, they take a time machine back to the present and decide to simply divide the slice between them. This leads to a future where humanity has been enslaved by robots.
91	* In the ''WesternAnimation/TUFFPuppy'' episode "Watch Dog", Dudley uses a time travel watch to go back and beat Kitty to the last donut in the break room, but he instead ends up in a reality where Snaptrap has taken over the world. At the end, Dudley uses it again when he misses the ice cream truck and successfully goes back in time, but changes the present so that he's wearing pants ([[EnmityWithAnObject which he hates]]).
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Context Main / NonSequiturCausality