Eureka Moment: Difference between revisions

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{{trope}}
 
In every [[Locked Room Mystery]], the detective can't solve the crime just by examining the relevant evidence. They always need some external inspiration (apparently) completely unrelated to everything, something along the lines of:
 
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'''Dave:''' ''That's'' how that letter found its way twenty miles to a dead man in Sudbury! }}
 
This will lead directly to [[The Summation]], unless there's an [[Evidence Scavenger Hunt]] in between. Often the character having the [[Epiphany (trope)|epiphany]] will tell the person whose offhand remark inspired it that they're "a genius" or the like; the remarker will then variously nod in a befuddled manner, ask "I'm what?", or simply demand an explanation.
 
Named for perhaps the most famous non-detective -related example, Archimedes' exclamation of "Eureka!" after jumping into a bath and realizing that held the key to the problem he was trying to solve. (See below for details.)
 
Not to be confused with a [[Bat Deduction]]. While both can initially appear almost identical, a Eureka Moment leads to a coherent chain of reasoning that the detective can explain to the bystanders later; whereas a [[Bat Deduction]], if it gets explained at all, makes even ''less'' sense after the explanation. Also not to be confused with the title protagonist of ''[[Eureka]]''.
 
The '''Eureka Moment''' shows up a lot on diagnosis-mystery medical shows, such as ''[[House (TV series)|House]]'', in which he does it in [[Once an Episode|nearly every episode]], and in the first episode of ''[[Grey's Anatomy]]'', which isn't even a medical detective show!
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Has no relation to [[Eureka|a small town full of scientists]]. Or [[Eureka Seven|mecha with surfboards]].
 
[[Sub-Trope]] of [[Epiphany (trope)|Epiphany]]. Compare [[Shaggy Search Technique]] and [[You Were Trying Too Hard]]. See [[Placebo Eureka Moment]] for when there wasn't any external inspiration, but they act like there was.
 
{{examples}}
== [[Advertising]] ==
 
* Commercials for Breakstone's cottage cheese had two:
==Advertising==
* Breakstone's cottage cheese had two:
** One has Paul Breakstone sitting in a bathtub while wondering how to make his cottage cheese more practical. Meanwhile, his wife is yelling at him that his bath time is over. Just before the commercial ends, his wife walks by and says "Get out of that tub!" He then gets the idea to package the cottage cheese in individual cups.
** Anther has him sitting under a peach tree, wondering what he can put in his cheese so kids would eat it. "Maybe something sweet," he says, as peaches start to fall around him. Then he exclaims, "I've got it! Pineapple!" (HeOf course, he may have [[Failed a Spot Check]] there, but the completed product has both peach and pineapple varieties.)
* In an 80s commercial for Lucky Charms, Lucky wasis pondering what new marshmallow shape to add to his cereal, when an angry purple horse kickedappears and [[Literal Ass-Kicking|kicks him in the butt]]; he quickly thoughtthinks of Purple Horseshoes. ("Eh, the idea just hit me!" he toldtells the kids, while rubbing his behind.)
* A commercial for Shell gasoline shows a scientist trying to figure out how to explore for petroleum reserves underwater without building multiple derricks and drilling dozens of holes. While at a restaurant with his son, his son is using a bendy-straw to suck up the last bits of milkshake at the very bottom of the glass. He comes up with the idea for a "bendy-drill".
== Anime and Manga ==
 
== [[Anime]] and [[Manga]] ==
* ''[[Detective Conan]]'' does this a lot. One time, he solved a murder he had been stuck on just by Ran mentioning that she had bought new pajamas for them. (To be more specific, she mentioned that said pjs were a matched pair, leading Conan to realize that the murderer was a set of identical twins.)
** Conan is a brilliant detective hiding in the body of a small child, so if he figures something out before anyone else, it's not uncommon for him to subtly lead those around him to their own Eureka Moment, rather than raising suspicions about himself by voicing his deductions directly.
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** As well as Conan deliberately inducing Eureka moments to Kogoro due to Kogoro's [[It's Personal]] attitude after the murder of one of his old judo teammates.
* In an episode of ''[[Cardcaptor Sakura]]'', wherein two of her magical allies were cursed with [[Shapeshifter Mode Lock]] and could not effectively [[Masquerade]] as non-magical, she had no idea how to break the spell until she was given a dead crab as a gift. She was inspired by the crab's shell which protects it "just like a shield!" and deduced that she could use her Shield card to protect her allies from the curse's outside interference long enough for them to transform.
** This was also how she first defeated the Watery card: realizing that the aquarium where The Watery was hiding had a freezer for its penguin feed, and that water stops moving when it freezes.
* In ''[[Utawarerumono]]'' (the visual novel), Hakuoro studies a strand of Mutikapa's fur in frustration, unable to explain why the creature fled the previous night when it had him and Eruruw in its grasp. Unable, that is, until Aruruw drenches him and the fur in tea and this trope ensues.
* Arguably the entire point of ''[[Yakitate!! Japan]]'', but applied to making bread. For example, one of these moments leads to the creation of Kazuma's "sushi-style" melon bread.
* In ''Magic Kaito'', another work by author Gosho Aoyama (author of the aforementioned ''[[Detective Conan]]''), Kaito figures out how an old, poor magician got a parliamentary pen after a kidnapper claiming to be the Kaitou Kid took the Prime Minister after Aoko tells him the key to beating the [[The Dragon|boss]] of their video game is to defeat the [[Big Bad|king]] controlling him first.
* ''[[Pokémon (anime)|Pokémon]]'': Ash Ketchum has one of these in pretty much every Gym battle to turn it around (granted, his epiphanies don't [[Screw the Rules I Have Plot|always]] [[Ass Pull|make]] the [[You Fail Physics Forever|most]] [[MST3K Mantra|sense]]). If you see him panicking because his opponent is pulling some kind of unbeatable schtick, then snap his head up with a thousand-yard stare and say "wait, that's it!", chances are someone's about to get their ass beat.
** Sometimes his companions do it too. May and Dawn get a few of these during their contest battles.
* Togusa gets two of these moments, early in the first season of ''[[Ghost in the Shell: Stand Alone Complex]]'', and in both of them, he's in a bathroom, looking at the mirror. In the second, the mirror is crucial: He realizes that, from the batch of pictures he's examining, all of them show a mirror or other reflective surface, but {{spoiler|the camera}} isn't visible in any of them.
* Occurs in ''[[Patlabor]]''|Patlabor: [[The Movie]]''. Our heroes are trying to find out what's causing some [[Humongous Mecha]] with a new OS to go out of control. While taking a break while the investigation seems to be leading nowhere, Noah sees a dog barking at something they can't see & mentions they can hear things humans can't, cluing Shinohara in to the fact that ultrasonic waves are the culprit.
** Shinohara actually gets two of these in the film. The second comes when they learn that the evil genius who created the program had a plan to make all the robots in Tokyo to go crazy at once &and are trying to figure out what could cause enough ultrasonic waves to make it happen. When a whistling tea kettle causes a nearby figurine in a glass case to shake they realize it's sympathetic vibrations in skyscrapers caused by the wind. Fortunately, it'd take a mind-bogglingly huge building &and incredibly powerful winds for a city-wide disaster to occur. Unfortunately a giant factory complex has just finished construction in Tokyo Bay &and a record-breaking typhoon is due to hit in three days...
* Naru has these regularly in ''[[Ghost Hunt]]'', usually due to an offhand comment from Mai.
* Happens to Misawa in ''[[Yu-Gi-Oh! GX]]'' as a way to break himself out of the resident cult's [[More Than Mind Control]]. It's also a [[Shout-Out]] to Archimedes' original eureka moment, so keep the [[Brain Bleach]] handy. (The dub edited in a pair of underpants.)
* Happens twice in ''[[Fullmetal Alchemist]]'', within the same scene. When trying to decipher a code {{spoiler|from Scar's brother's notes, the group takes a break to reassemble Al who is in 'pieces', like a puzzle. May rips the bindings of the notes and with Scar and Marcoh's help reassemble it to see the nationwide transmutation circle (which Ed and Al figured out beforehand). When trying to think there was a silver lining in this, Yoki sneezes and causes the papers to shift. They're annoyed that the papers have been 'flipped over', and Al comes to his realization that the papers needed to be turned over to see the other half of the hidden message: a ''second'' transmutation circle [[Chekhov's Gun|which can be used to reverse the effects of the first.]]}}
 
== [[Comic Books]] ==
 
* [[Batman]]'s Eureka Moment from way, way back in ''[[The Golden Age of Comic Books| Detective Comics #27]]'' defined his career:
== Comic Books ==
* [[Batman]]'s Eureka Moment from way, way back in ''[[The Golden Age of Comic Books| Detective Comics #27]]'' defined his career:
{{quote|'''Bruce Wayne:''' Criminals are a superstitious cowardly lot. So my disguise must be able to strike terror into their hearts. I must be a creature of the night, black, terrible...
(Window blows open, and a certain species winged mammal flies in.)
'''Bruce:''' ''A BAT!'' }}
* Evil characters also can have this, as ''[[Iznogoud]]'' proves:
{{quote|Iznogoud: Do you have an idea how I could get rid of the Caliph, Wa'at Alaaf?
Wa'at Alaaf: Sir, I'd rather feed my tongue to a cat!
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* In almost every issue of ''[[The Maze Agency]]'', some seemingly random comment or event will start the gears spinning in Gabe's head and cause him to suddenly see the solution to the current mystery.
 
== Commercials[[Fan Works]] ==
* A commercial for Shell gasoline shows a scientist trying to figure out how to explore for petroleum reserves underwater without building multiple derricks and drilling dozens of holes. While at a restaurant with his son, his son is using a bendy-straw to suck up the last bits of milkshake at the very bottom of the glass. He comes up with the idea for a "bendy-drill".
 
 
== Fan Works ==
* In ''[[Kyon: Big Damn Hero]]'', Mikuru realizes [[Tricked-Out Time|a loophole to allow a time traveler change history without violating causality]] after commenting to Kyon that the dinner she just cooked was "add[ing] some things from outside of the normal recipe".
 
== [[Film]] ==
 
* In ''[[Blazing Saddles]]'', <s>Hedy</s> Hedley Lamarr's evil plans all come as a result of these.
== Film ==
* In ''[[Blazing Saddles]]'', Hedley Lamarr's evil plans all come as a result of these.
* ''[[The Hunt for Red October]]'': Ryan, mulling over how Capt. Ramius could manage to get the rest of his crew off the sub as part of his plan to defect.
{{quote|"We don't have to figure out how to get the crew off the sub. He's already done that, he would have had to. All we gotta do is figure out what he's gonna do. So how's he gonna get the crew off the sub? They have to want to get off. How do you get a crew to want to get off a submarine? How do you get a crew to want to get off a ''nuclear'' sub..."}}
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* In ''[[Inside Man]],'' a chance comment a rookie cop makes to Denzel Washington's character allows him to figure out how exactly the hostage takers were able to stay ten steps ahead of the police.
* ''[[A Beautiful Mind]]'': Nash develops his theory out of his friends' fighting over a girl. [[Did Not Do the Research|THE NASH EQUILIBRIUM DOES NOT WORK THAT WAY!!!]]
** [[Xkcdxkcd|Dammit, Feynman!]]
** There's a more serious case later in the movie: {{spoiler|Nash realizes he hallucinates when he realizes in all the years he's seen them, the little girl never ages.}}
* After two weeks of poring over a cartouche in the original ''[[Stargate (film)|Stargate]]'' movie, Daniel Jackson finally figures out that the symbols aren't hieroglyphs, but star constellations when he sees a picture of Orion on a guard's newspaper and recognizes the shape as one of the symbols.
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'''MAX''': That an answer will come.
'''SOL''': No, it's the wife! You have to relax! }}
* In the first ''[[Ace Ventura]]'' movie, Ace gets his Eureka Moment when his dog lies across the forehead of a picture of a Miami Dolphins kicker...and the way the dog's hair falls gives him his [[Epiphany (trope)|epiphany]]...and his [[Dude Looks Like a Lady|entire week's]] [[Brain Bleach|food consumption]]...
* ''[[Evolution (film)|Evolution]]'' has some [[Egregious]] examples:
** The revelation that the aliens reproduce quicker with ''[[Incendiary Exponent|fire]]'' is brought about by Orlando Jones' character dropping a lit cigarette into a petri dish, seconds after explaining how he hasn't smoked in years.
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* ''[[Dogma]]'' has one of these near the end; Jay tells Bethany (while trying to get it on, because the world's about to end) about a boardwalk he once took a girl to on a date. Bethany, after learning that the boardwalk has Skeeball, realizes that "John Doe Jersey," of whom her minister was sermonizing about earlier, is God, trapped in a comatose mortal body.
** Hey, Jay was a prophet (or is that profit?), after all.
* ''[[L: Change the World]]'' has one character hiding clues in math problems. L figures out the solution when accidentally given a clue.
* ''[[In the Line of Fire]]'': Clint Eastwood's character figures out the meaning of a word with seven letters after a chance remark by a character played by Joshua Malina.
* ''[[Mega Shark vs. Giant Octopus]]''. After having sex the two [[Hot Scientist]]s realize pheromones are the key. To capturing the monsters, that is.
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** What's more, {{spoiler|the shop clerk who triggered the Eureka Moment is one of the killers herself. [[I Never Said It Was Poison|Oops]].}}
* ''[[Major League]]'': The Indians' manager is about to send hopelessly wild pitcher Ricky Vaughn back to the minor leagues. During their conversation, the manager off-handedly mentions another pitcher who went down to the minors and had a successful career. Vaughn squints in the pitcher's direction, and the manager realizes all his problems are related to poor vision.
* In ''[[K-9]]'' Dooley is growing frustrated with a case he's working. His girlfriend Tracy told him that he needed to relax, and the answer would come to him. Not much later, things are getting romantic between the two, when lo and behold, Dooley has an [[Epiphany (trope)|epiphany]] and must rush out the door with his four-legged sidekick.
* In ''[[Tangled]]'', when Rapunzel and Flynn are trapped in a dark cave filling rapidly with water and need light to see by, this exchange occurs:
{{quote|'''Flynn''': My real name is Eugene Fitzherbert. I figured someone should know.
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'''Steve Rogers''': Right. I caught his act in Stuttgart.
'''Tony Stark''': Yeah. That's just previews, this is... this is opening night. And Loki, he's a full-tail diva. He wants flowers, he wants parades, he wants a monument built to the skies with his name plastered... Son of a bitch. }}
* Knowledge of the [[Trope Namer]] gives the hero one in ''[[Indiana jones and the Dial of Destiny]]''. Indy and Helena are in the outer part of Archimedes’ tomb, which is, of course, your typical [[Temple of Doom]], with a chamber that floods with deadly (and foul-smelling) methane gas. The chamber has a pool of water next to a Statue of Athena, goddess of wisdom and war, plus several metal weights near her feet. Indy realizes that Archimedes was most famous for an experiment involving water displacement, so realizes that he has to simply shove the weights into the pool until it overflows, and the entrance to the tomb proper (with no gas) is revealed.
** At the end of the movie, Indy inadvertently [[The Gump| helps Archimedes himself]] with another Eureka Moment, his discarded watch making the artificer realize how to make the eponymous mechanism work.
 
== [[Literature]] ==
* Miranda has one at the end of "the novel ''[[When You Reach Me".]]'' by Rebecca Stead:
{{quote|I am jumping up and down because at the very moment Dick Clark said the word "Go," it was like an invisible hand reached out and snatched away my veil. And for almost a minute, I understood everything. When that veil isn't hanging down right in front of a person's face, a minute is long enough to realize a lot of things.}}
* [[Agatha Christie]] loved doing this in the Hercule [[Poirot|Hercule Poirot]] novels. Very frequently, he fits the pieces together after inspiration from a chance remark by one of the other characters; to Poirot's credit, he never fails to explain precisely how it helped him break the case.
* Every ''Cat Who...'' novel by Lillian Jackson Braun features Koko the Siamese doing something odd which eventually leads to Qwilleran having a Eureka Moment. How plausible Koko's behavior is, either taken at face value or with the strong hint he's ''trying'' to give clues, varies considerably.
* [[Lampshade Hanging|Lampshaded]] in ''The Burglar Who Traded Ted Williams'': While Bernie Rhodenbarr is talking with a friend, she mentions the ''Cat Who...'' series, when his cat suddenly launches into strange behavior and Bernie solves the crime. {{spoiler|Subverted, in that he'd already solved the crime, but didn't care about revealing the result. When the cat acted, as if on cue, he decided to play along.}}
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* In ''[[American Gods]]'', this is how Shadow figures out where a {{spoiler|small-town serial killer has been hiding his victims' bodies,}} acting on a comment from a god who knew what was going on, and was trying to clue him onto it.
* This is nearly Elijah Baley's entire ''modus operandi'' in [[Isaac Asimov]]'s ''Robot'' novels. The third and final book in the series even barely gets away with justifying it.
** In ''[[The Caves of Steel]]'', Lije Bailey figures out the murder mystery when his partner casually brings up {{spoiler|Enderby's glasses. All pieces of the puzzle then come together: Lije realizes that Enderby (who was earlier established to be psychologically incapable of killing a human) accidentally murdered a person, instead of destroying their robotic lookalike, because he couldn't see clearly when his glasses shattered}}.
** Asimov also wrote an essay about how this sort of thought process works called "the Eureka effect". It's even made it into a few high school literature books.
* An extremely complicated version of this trope is pretty much the premise of ''Chasing Vermeer''.
* [[Timothy Zahn]] likes this trope. Or, more accurately, this trope fits his style. Many of Zahn's original works are [[First-Person Smartass]], and the settings are similar to Hitchcock-style suspense/intrigue mysteries, so there's guaranteed to be one when the protagonist finally puts the pieces together. (Though the reader, unless he figures it out too—which is sometimes possible and sometimes not—won't know until [[The Summation]].) Some examples:
** ''[[The Icarus Hunt]]'' has at least two: One when a comment makes the protagonist realize another person's murder was connected with something completely different than he'd been assuming; another when a different comment triggers a flashback. [[The Summation]] indicates he may have had another couple more along the way that the audience wasn't even privy to.
** The ''[[Quadrail Series]]'' tends to have one per book, minimum; most notably, the moment in ''Night Train to Rigel'' when Compton figures out how the FTL trains work.
** This even shows up in his ''[[Star Wars Expanded Universe]]'' work, though those get more promptly revealed to the reader: in ''[[Outbound Flight|Survivor's Quest]]'', a random comment by Luke triggers a flashback for Mara, in which she recognizes a major inconsistency in some of their companions' back story.
** And finally, one for Leia in ''[[The Thrawn Trilogy|The Last Command]]''. Talon Karrde mentions how he was a ''Chimaera'' prisoner, and for Leia, "suddenly, all the pieces had fallen into place...and the picture they formed was one of potential disaster."
* Aside from the few times they recognize the answer instantly, the characters in ''[[The Da Vinci Code]]'' seem to rely solely on this trope to solve all the various puzzles and sub-puzzles. For the last puzzle before the book's climax, we don't actually get to see the main character work out the answer.
* [[Nero Wolfe]] does this quite a bit. He's got all the pieces, but can't make them fit together, Archie (or one of the suspects) says something that causes him to look at one particular thing in a different way, and everything falls into place. He will often admit to Archie when it was something that he said or did; if it was someone else, he saves the information for the [[The Summation|Parlor Scene.]] Both Archie and the reader know one has just occurred when Nero starts doing his "lip exercises".
* Subverted, while lampshading the subversion, in Mil Millington's "''[[Love And Other Near-Death Experiences"]]'', in which the central character has a startling realization that he recognizes would qualify as a Eureka Moment - except that nobody did or said anything to trigger it, it just happened without prompting.
* In ''[[Harry Potter (novel)|Harry Potter]] [[Harry Potter/Harry Potter and Thethe Half-Blood Prince (novel)|Harry Potter and the Half-Blood Prince]]'', a sarcastic comment by Harry ("Fifty-seventh time lucky?") about his inability to get a crucial memory of Voldemort from Slughorn inspires Ron to suggest Harry use his luck potion, which proves effective. A similar scene occurs in the movie, only (in keeping with the screenwriter's general inclinations) reversed: Ron's comment inspires Harry.
* In ''[[Memory, Sorrow, and Thorn]]'', near the climax of the third novel, [[Magical Native American|Binabik the troll]] has a classic Eureka Moment during his party's escape from the [[The Fair Folk|Norns]] beneath Asu'a, as a result of an offhand comment from the dwarrows who are aiding them. Unconventionally, this leads not to the solution to the plot but the [[Oh Crap|horrifying realization]] that the heroes have been doing the [[Big Bad]]'s bidding the entire time.
* In the grand tradition of mystery novels, happens frequently in [[Ngaio Marsh]]'s ''Inspector Alleyn'' series. An interesting departure is that the Eureka moment for Alleyn usually occurs near the middle of the book, with the reader catching up as more evidence is gathered.
* Subverted in the ''[[Discworld]]'' novel ''[[Discworld/Feet of Clay (novel)|Feet of Clay]]'' where Vimes specifically warns against this.
** Played straight at the end of the book, when remarks of [[The Ditz|Detritus and Fred Colon]] make Vimes realize the [[Big Bad]] had been rubbing the hints of his plot in Vimes' face, assuming Vimes wouldn't get them.
** Lampshaded in that "eureka" is a Ephebian word meaning "Bring me a towel".
* In [[Dorothy L. Sayers]]'s ''Whose Body?'', [[Lord Peter Wimsey]]'s moment of revelation is explicitly compared to staring at jumbled letters until they formed a word of their own inclination.
* In ''[[The Caves of Steel]]'', Lije Bailey figures out the murder mystery when his partner casually brings up {{spoiler|Enderby's glasses. All pieces of the puzzle then come together: Lije realizes that Enderby (who was earlier established to be psychologically incapable of killing a human) accidentally murdered a person, instead of destroying their robotic lookalike, because he couldn't see clearly when his glasses shattered}}.
* In ''[[Remote Man]]'', Ned comes up with his plan to bring down Laana's smuggling operation when he's browsing in a dime store. He picks up a pin cushion that he discovers has a music box inside playing a familiar tune: ''The Entertainer.'' This brings back memories of watching ''[[The Sting]]'' with his father, which in turn sparks his plan, which is to invent a person, a rich businessman with his own fabricated website, to be a client of Laana.
** Earlier, Ned overhears a conversation mentioning "an anchorman in Kingston". When he later learns that Kingston is the capital of Jamaica, he realises that what he heard was "a nanka-man", nanka being a local term for the Jamaican Boa.
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* When Chichikov gets the idea for his scam in ''[[Dead Souls]]''.
 
== [[Live -Action TV]] ==
 
* The Dutch Detective show ''[[Baantjer]]'' featured, in ''each and every episode'', a Eureka moment when the protagonists were in their usual bar, when the barman makes an offhand remark. The Euraka moment always looks and sounds the same too. Eventually Lampshaded, when the barman asks if he doesn't deserve be put on the police payroll.
== [[Live Action TV]] ==
* ''[[Jonathan Creek]]'' actually used this so much that at one stage another character [[Genre Savvy|actually ''anticipated'']] that a totally random object would trigger a Eureka Moment in Jonathan, and so caused a distraction.
* The Dutch Detective show ''Baantjer'' featured, in ''each and every episode'', a Eureka moment when the protagonists were in their usual bar, when the barman makes an offhand remark. The Euraka moment always looks and sounds the same too. Eventually Lampshaded, when the barman asks if he doesn't deserve be put on the police payroll.
* ''[[Jonathan Creek]]'' actually used this so much that at one stage another character actually ''anticipated'' that a totally random object would trigger a Eureka Moment in Jonathan, and so caused a distraction.
* Hong Kong prime time dramas seems to love this trope. Case in point, the period drama ''Song Shijie'', where the eponymous character is a court lawyer who seems to be surrounded by people and incidents that randomly give him pivotal clues.
* In ''[[Angel]]'' this is lampshaded when Angel announces that they're waiting for Wesley's Eureka Moment - at which point Wesley promptly shouts "Eureka!"
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* In the pilot episode of ''[[Bones]]'', Brennan is sitting down to have a drink and discussing a book written by the episode's original patsy, when they come across the patron saint of fish, and Brennan realizes who the real baddie was, based on the fact that he kept tropical fish tanks that used a certain type of diatomaceous earth, and runs off to take him down by herself.
* This trope was regularly parodied in the 1960s [[Batman (TV series)|Batman]] TV show. "That's it, Robin! The man in the grey suit was whistling 'The Star-Spangled Banner' BACKWARDS! The Joker's lair must be in the old fireworks factory! [[To the Bat Noun|To the Batmobile]]!"
* The title character of ''[[Castle]]'' is beginningbegan to show an aptitude for Eureka Moments, usually inspired by his daughter. In a reversal, he gave one to his daughter in one episode.
** Castle and Beckett will often have these moments simultaneously (or near simultaneously) in order to demonstrate how they click (in [[UST|more ways than one]]). For one example, Beckett was writing something on [[The Big Board]] when she suddenly had a brainwave... and Castle at the exact same time ran in from the elevator, having obviously had the exact same brainwave.
* Happens with astonishing regularity in ''[[The Closer]]''. Brenda has them all the time... in fact, she had one when she was at her father's hospital bed, and another when she was trying on her wedding gown.
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* This trope regularly occurred on ''[[Remington Steele]]'', with Steele being reminded of an old movie which somehow resembles the case he is working on. Sometimes used as a [[Red Herring]] when Steele's movie references end up providing a plausible but entirely incorrect solution.
* In one episode of ''[[Seven Days]]'', a scientist discovers a cure for cancer by seeing some water on her morning jog. The discovery is apparently averted when Frank goes back and interrupts her right before she sees the water- but she discovers it anyway after receiving a similar Eureka Moment from some coffee Frank gives her.
* ''[[Stargate SG-1|Stargate SG 1]]''. If Jack O'Neill is going to solve the episode's problem without shooting his gun a bunch, he'll say something random and Carter'll build a solution out of it.
* An episode of ''[[The West Wing]]'' has Josh struggle all episode with trying to determine a solution for an unfavorable rider to a long-fought for bill that will result in a piece of land being used for strip-mining. After wracking his brains all episode without success, a chance comment from Donna about antiquated computer systems reminds him of a long conversation with the President earlier in the episode about national parks, and he comes up with the idea of using the Antiquities Act to have the President declare the region a national park.
** Josh and Donna had a few of these over the series. Another one concerned judicial nominees after the death of a Supreme Court Justice, and the declining health of the Chief Justice. Although all the characters were unhappy that they couldn't get the nominees they wanted confirmed, it wasn't until Donna told Josh the story of how her parents got their cats (they went to an animal shelter, and they couldn't decide between two, so they got both) that he has the idea of letting the Republicans name whoever they want for the open seat, if they will accept the Democratic nominee for Chief Justice.
* Spoofed in ''[[Garth Marenghi's Darkplace]]'' ("The Apes of Wrath") when people start devolving into monkeys due to contaminated water. The hero suddenly puts all the pieces together (the fact that his friends turned into monkeys after drinking a cup of water, the only two people who haven't turned into monkeys aren't drinking the water, and that the water's a sickly green color) and concludes... that he's thirsty.
* ''In [[Battlestar Galactica Reimagined]](2004 TV series)|the 2004 ''Battlestar Galactica'']] episode ("Scattered")., Gaeta comes up with the idea to network Galactica's computers by lining up soap bars in the latrine.
* On ''[[Good Eats]]'', Alton was agonizing on what to do for an avocado-themed episode (while his assistants are suggesting varieties of guacamole) when one rolls into a sink full of water. He shouts "Eureka!" when he sees that the avocado floats.
* ''[[Ultraman Mebius]]'' has such a moment in episode 34, when watching Ryuu light a campfire by twirling a stick on a piece of wood allows him to develop the [[Everything's Better with Spinning|drill kick]] technique he uses to defeat the [[Kaiju]] [[Monster of the Week|Of The Week]]
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{{quote|'''Murdoch''': I wasn't aware I had resigned myself to anything, Miss Ogden. But you have given me some insight into this case.
'''Ruby Ogden''': I have? I didn't intend to. }}
* Classic example, from ''[[MASHM*A*S*H (television)|M*A*S*H]]''; Hawkeye and BJ challenge Winchester to join them in a poker game with Col. Potter, Major Houlihan, Father Mulcahey and Radar, only to have Winchester way ahead halfway through. While Winchester is taking a break, the others complain about his annoying whistling, with Radar commenting that he keeps whistling even louder when he's bluffing. [[Beat|A few seconds later]]...
{{quote|'''Hawkeye''': A-ha! He whistles ''louder''...
'''All''': ...When he's ''bluffing''! }}
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* In the ''[[Power Rangers in Space]]'' episode "Five of a Kind", T.J.'s watching video footage of the Rangers' last fight against the [[Psycho Rangers]] (who the Rangers have struggled badly against up to this point, as each Psycho copies their individual fighting style) when the color disappears from the video. The monochrome footage gives him the idea to disguise the entire team in the same color uniform, so the Psychos won't know who is who.
* Frequently used in ''[[Columbo]]'' where the detective would see something that would ''inspire'' him and would only be revealed at the end, once that critical detail had been used to lure the killer into revealing their crime unwittingly.
* ''[[Married... with Children|]]'': Kelly Bundy]] once gets one of her rare [[Genius Ditz|moments of insight]] and announces it with [[Malaproper|"Urethra!"]]
* ''[[The Finder]]'' has Walter Sherman having these in the middle of a [[Dream Sequence]].
* Parodied on ''[[The Goodies]]''.
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'''Tim:''' Why, what do you mean?
'''Graeme:''' ...I dunno, I shall have to think. }}
* This is also a [[Once an Episode]] occurrence on the 1975-6 ''[[Ellery Queen]]'' TV series. In the final act Ellery will be in some mundane activity, usually with his police Inspector father, say "Of course!" and [[Breaking the Fourth Wall|break the fourth wall]] to outline the evidence and then ask the audience if they've solved the mystery.
* The title character of ''[[Jin (TV)|Jin]]'', an early 21st-century doctor flung 140 years back in time to 19th-century Edo, has one when, after wracking his brain for quite a while for all the details of his fiancée's steampunk-level process for making penicillin, he accidentally knocks over a jug of oil. This reminds him that oil is a key element of the step of the process where he was stuck.
 
== [[Newspaper Comics]] ==
* ''[[The Far Side]]''; one cartoon shows Albert Einstein having written and crossed out on a blackboard "E=mc^3", "E=mc^4", and many other variations with the number different. He notices the cleaning lady who has just straightened out his desk saying, "There we go, everything squared away. Squaaaared away."
* In an arc of ''[[Peanuts]]'' strips, Lucy wants to win the school science fair, and realizes she needs to come up with something original:
{{quote|'''Lucy:''' The other kids will have rocks and bugs and batteries and mice and seeds and all of that stuff... I've got to think of something completely different...
''(Notices Linus with his blanket)''
'''Lucy:''' THAT'S IT!}}
:* She then proceeds to conduct a study [[Security Blanket|of Linus and his blanket]] to discern why it gives him security.
 
== [[Radio]] ==
* On ''[[Absolute Power (radio)|Absolute Power]]'' Martin's comments (usually that they should give up, or similarly unhelpful) often give Charles a Eureka Moment. [[Lampshade Hanging]] in the second episode:
{{quote|'''Charles''': You have that ability, peculiar to the mediocre, of making the obvious statement that brings out the genius in a genius.}}
 
== [[Video Games]] ==
 
* Parodied in the first season finale of Telltale's ''[[The Adventures of Sam & Max: Freelance Police|Sam and Max Freelance Police]]'' series. Most fans had figured out by this point who the season villain was, so at the beginning of the episode Sam is trying to figure out who the villain is. has to drop increasingly obvious clues before Sam finally figures it out.
== Video Games ==
* Parodied in the first season finale of Telltale's ''[[The Adventures of Sam & Max: Freelance Police|Sam and Max Freelance Police]]'' series. Most fans had figured out by this point who the season villain was, so at the beginning of the episode Sam is trying to figure out who the villain is. has to drop increasingly obvious clues before Sam finally figures it out.
* Happens a few times in the ''[[Ace Attorney]]'' series.
** The most triumphant example in the first game has to be in case 4. You're backed into a corner, you have no proof that the witness isn't who he says he is, and it looks like you're going to lose. von Karma then says something as a joke which suddenly turns everything around: {{spoiler|"Perhaps you would like to cross-examine the parrot for some comic relief?"}}
** This trope is probably why the Edgeworth-based spin-off game makes his [[Catch Phrase]] "Eureka!" (Though quite a few fans thought this was a little [[Narm]]-y.) He actually does get one in AAI case 2, when {{spoiler|1=Zinc LeBlanc falls over the railing in the plane's cargo bay}}.
** At several points in AAI Edgeworth will hit a brick wall with his confrontations, but then the player is reminded of past innocuous scraps of conversation, then links together half a dozen or so pieces of logic, which leads to a whole new perspective on the case. Sufficiently awesome music starts up to accompany this.
* ''[[Heavy Rain]]'' - The clues start coming together in the last act for the characters (and, by extension, the player) this way.
* In ''[[Assassin's Creed]] II'', Ezio and an ally are trying to figure out how to get into the Doge's palace to prevent an assassination plot. The friend remarks that the walls are so high, "only a bird could get over them". Ezio hears this and mutters "A bird... yes...", then runs off to ask [[Leonardo da Vinci]] about that flying machine of his...
* In ''[[Nine Hours, Nine Persons, Nine Doors]]'', {{spoiler|Junpei looks at Snake's dead body, whilst searching the Shower room for Clover, and notices his left arm's bone: the real Snake's left arm was in fact prosthetic. Snake was thus alive, and Junpei slowly realizes who did it.}}
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'''Mr. Nailbrain:''' ...Still not following ya kap'n. }}
 
== [[Web Comics]] ==
 
== Web Comics ==
* In [https://web.archive.org/web/20101130114345/http://cedarseed.com/malaak/II25.html Malaak, issue II, page 25], the person giving the inspiration doesn't even know about the mystery.
* Parodied in ''[[Shortpacked]]''; Robin ''[http://www.shortpacked.com/d/20080130.html insists]'' on this trope for some reason.
* ''[http://xkcd.com/712/ This ]'' ''[[Xkcdxkcd]]'' comic.
* Revolver Ocelot experiences one in ''[http://gigaville.com/comic.php?id=111 this]'' ''[[The Last Days of Foxhound|Last Days of Foxhound]]'' strip. Of course, he is {{spoiler|just [[Obfuscating Stupidity|playing dumb]] in order to be able to manipulate Solidus later.}}
* ''[[Wapsi Square]]'': [http://wapsisquare.com/comic/stalling/ Amanda you're a friggen genius!]
* In ''[[Homestuck]]'', John figures out how to use the Alchemiter as a [[Merging Machine]] after reading about a card trick.
* In ''[[Ensign Sue Must Die]]'', Spock has [https://web.archive.org/web/20110725144219/http://www.interrobangstudios.com/potluck/index.php?strip_id=1048 one.] Spock Prime's reaction simply rubs the salt in the wound.
* Dimentio has one in ''[[L's Empire|Ls Empire]]' [https://web.archive.org/web/20160316150231/http://l-empire.smackjeeves.com/comics/1491118/nightfall-pt-4/ here].
 
== [[Web Original]] ==
* In "Ayla and the Birthday Brawl" in the [[Whateley Universe]], Phase has a Eureka Moment in the middle of the final battle of the story. It nearly turns into a [[Brick Joke]] when we don't get to hear the deduction until well into the next novel, as the attack used by the Necromancer tells Phase {{spoiler|that there is a link between the Necromancer and Hekate, another of their Big Bads.}}
 
== [[Western Animation]] ==
 
== Western Animation ==
* In the ''[[Batman: The Animated Series]]'', virtually every conversation Batman has with Alfred while pondering the crime du jour leads to a Eureka Moment (and an "Alfred! You're a genius!" declaration, and a bemused "Of course, sir" response).
** One memorable conversation involved the Riddler and a series of riddles. Batman and Alfred are staring at the riddles and Alfred makes the comment that the riddles all involve numbers. From that, Batman turns the numbers into Roman numerals and then simultaneously, both declare, "Of course! The Department of Motor Vehicles!" (suddenly seeing the Roman numerals DMV together could easily be a Eureka Moment for any American.)
** Another has Batman deducing where Count Vertigo's hideout is when Alfred tells him that he soon won't know his right hand from his left. Yes, he was confused about which direction Vertigo escaped in because his senses were scrambled, and he had actually gone in the opposite direction Batman had originally thought.
** In yet another (Killer Croc's appearance on the scene), Batman realizes the nature of his foe due to Alfred's offhand comment that he was going to keep dinner in a crock pot to keep it warm.
{{quote|'''Bruce:''' Alfred! You're beautiful! ''[runs off]''
'''Alfred:''' Imagine if I'd gotten around to telling him about the salad.}}
* ''[[The Great Mouse Detective]]'': "...Set it off... now? Yes! That's it! We'll set the trap off ''now!''"
* ''[[A Bug's Life|A Bugs Life]]''
{{quote|'''Princess Atta:''' I mean, even Hopper's afraid of birds--
'''Flick:''' Haha, yeah, I -- say that again? }}
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** In one flashback episode, several people congratulated Homer because Marge had become pregnant (with Maggie). Homer, himself unaware of the pregnancy, misinterpreted these comments (even the ridiculously direct ones) as regarding his new job. Then one character congratulates him on the new job, prompting Homer to respond, "New job? MARGE IS PREGNANT!?" That's "ridiculously direct", as in "Hey, Homer, way to get Marge pregnant!" "This is getting increasingly abstract, but yes, I do enjoy working at the bowling alley"
** When the family is trying to figure out a way to keep Apu from being deported, Abe mentions he could try living in a balloon. Lisa exclaims "That's it!", leading Bart to declare that she's as dumb as him. She explains that she connects him being a grandfather with grandfather clause, with his statement being irrelevant.
* ''[[Captain Flamingo]]'' runs on this trope. Every use of the eponymous character's "Bird Brain" is either this, or a full-on [[I Was Just Joking]], depending on [[Rule of Funny|which would be funnier.]] Either way, it's played for laughs, as the ideas he gets are usually ridiculous... but always manage to work.
* According to ''[[Animaniacs]]'', Albert Einstein conceived his famous mass/energy equivalence formula (you know, E=mc^2) while watching Wakko writing "Acme" backwards (his "a" looked like a "2"). In a similar episode, the Warners were cleaning Beethoven's chimney (badly, of course) and humming an obnoxious tune that went a little something like "Hm hm hm hmmmmmmmm". As they're leaving, ol' Ludwig finally has the inspiration for his Fifth Symphony. The next house on the Warners' route is "that Van Gogh grouch again", and Wakko picks a sunflower to help cheer him up.
* According to ''[[Animaniacs]]'', Albert Einstein has conceived his famous mass?energy equivalence formula (you know, E=mc^2) while watching Wakko writing "Acme" backwards (his "a" looked like a "2").
** In a similar episode, the Warners were cleaning [[Ludwig Van Beethoven|Beethoven's]] chimney (badly, of course) and humming an obnoxious tune that went a little something like "Hm hm hm hmmmmmmmm". As they're leaving, ol' Ludwig finally has the inspiration for his Fifth Symphony. The next house on the Warners' route is "that Van Gogh grouch again", and Wakko picks a sunflower to help cheer him up.
* In an episode of ''[[The Raccoons]]'', Cyril is accused of stealing a gem during a blackout. Bert is trying to solve the crime but is stumped until he sees Cedric drop his [[Nerd Glasses]] in the river. It's then that he realizes that the gem was not stolen but knocked in an aquarium, and was rendered invisible by water refraction, same as Cedric's lenses.
* [[Alternate Character Interpretation]] of ''[[Pinky and The Brain]]'' says that Pinky has one of these every time Brain asks him "[[Are You Pondering What I'm Pondering?]]", but since Pinky's thought processes are rather [[Cloudcuckoolander|unique]], neither the audience nor the Brain can figure out what Pinky's talking about.
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* The ''[[Samurai Jack]]'' episode "Jack vs Aku" starts with three of his attempts on Jack's life failing [[Epic Fail| even worse than they usually do]]. The villain curses the shoddy attempts by the robots, slumps in his throne, and mumbles, "Guess it's true what they say, you want something done right, you gotta do it yourself..." Then his eyes open wide as he gets an idea (lure Jack into a trap by challenging him personally), which kicks off the episode's main plot.
* Sent up in a [[Running Gag]] on the ''[[South Park]]'' episode "Cancelled". The astronomer investigating Cartman's satellite dish implant draws several correct conclusions after increasingly absurd free association sessions based on conversations with Chef.
** [[Depraved Homosexual|Mr. Garrison]] struggled to invent a new vehicle until Mr. Hat [[TalkingInner to ThemselfDialogue|commented]] "Boy, that Enrique Iglesias can sure gyrate his hot ass around" and decided on a gyroscope.
* Shego's mockery of her evil employer Dr. Drakken in ''[[Kim Possible]]'' often gives him inspiration for his next [[World Domination]] plot.
** When Kim visited her cousin Larry, he commented that Monty Fiske, the archeologist they had assisted earlier, was a master of Tai Shing Pek Kwar or Monkey Kung-Fu, prompting Kim to realize that he was the villain Monkey Fist.
* ''[[Teen Titans]]'':
* In ''[[Teen Titans: Trouble in Tokyo]]'', Starfire's offhanded use of the word "fear" reinvigorates Robin's belief in trouble brewing in Japan.
** From the multi-part episode "The End", as Starfire, Beast Boy, and Cyborg are being beaten senseless by their [[Evil Counterpart]]s:
{{quote|'''Beast Boy:''' Dude! I had no idea I was this tough!
'''Cyborg:''' You're not! I could kick your butt any day of the—
''([[Beat Panel|Beat, as they all figure it out]])''
'''Starfire:''' If we cannot defeat ourselves, maybe we can defeat each other!
'''Beast Boy & Cyborg''': ''[[Opponent Switch| SWITCH!]]''
''[they tag hands, they swap enemies, fight starts again, they make short work of the villains]''
'''Cyborg:''' Told ya I could kick your butt!}}
:* In ''[[Teen Titans: Trouble in Tokyo]]'', Starfire's offhanded use of the word "fear" reinvigorates Robin's belief in trouble brewing in Japan.
* In an episode of ''[[Garfield and Friends]]'', Garfield is recounting the times cats have shaped history. One such anecdote involves [[Benjamin Franklin]], who is trying to design a new type of stove; he looks behind him where his cat is watching, and then says, "That's it! A ''potbelly'' stove!"
* "Jack's Obsession" from ''[[The Nightmare Before Christmas]]'' leads up to an Eureka Moment, with Jack even shouting "EUREKA!!!"
* [[Lampshaded]] in the ''[[Futurama]]'' episode "That Darn Katz!":
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'''Finn:''' Some Donkus's real name must have been.... [[Fridge Brilliance|ReeeeEEEEE]]'''[[Fridge Brilliance|EEEEE]]''[[Fridge Brilliance|EEEEENCE?!?!]]''''' }}
** In another episode, Finn solves a case when he's tipped off by the sentence, "This place could use a scarecrow."
* In the second season finale of ''[[Teenage Mutant Ninja Turtles (2003 series)|Teenage Mutant Ninja Turtles]]'', the heroes quickly realize that defeating the bad guys hinges of halting Stockman's sabotage of the Utrom's computer systems, but Stockman's small cybernetic body makes him too fast to pin down plus able to climb the walls, well out of reach. Raphael sarcastically suggests convincing Shredder to tell him to stop, seeing as Stockman seems willing to do whatever Shredder tells him - which causes Leonardo to figure out that the pain-inducers Shredder is using to keep Stockman in line are voice-activated. So he tells their ally Professor Honeycutt - whose robotic voice synthesizer can analyze and duplicate others' voices - to duplicate Shredder's voice, and it works like a charm.
 
== [[Real Life]] ==
* The word "Eureka" originates from [[Older Than Feudalism|ancient Greek]], meaning "I have found it!" Archimedes was consulted to figure out how to tell whether a crown that the king had commissioned was made from the pure gold he had supplied to the jeweler, or whether the jeweler had substituted silver for gold to make a crown the same weight. When Archimedes took a bath, some of the bathwater overflowed the edge of the tub, prompting him to realize that an object displaces its equal volume in water. Jumping out of the water, Archimedes shouted "Eureka!" and ran to report this discovery to the king. [[Naked People Are Funny|Forgetting to get dressed first]]. The subject of volume displacement in physics is, fittingly enough, known as "Archimedes' Law" because of this.
* Newton's understanding the gravity supposedly came after an apple fell on his head. (Which never actually happened, but [[Bellisario's Maxim|nobody cares about that]].)
* Friedrich August Kekule allegedly realized the structure of the benzene molecule after dreaming about [[Ouroboros|a snake biting its own tail]].
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*** Parodied by Discworld, by suggesting that DNA might have been faster but only licensed to carry 14 people, if he'd been looking at an elevator during the Eureka moment.
* [[Isaac Asimov]] has a famous quotation where he points out that, [[Averted Trope|despite the example of Archimedes]], great scientific discoveries are usually not heralded by "Eureka!" but instead with "Huh. That's strange..."
* Gauss once wrote in his diary "EYPHKA! num = Δ + Δ + Δ," thinking he'd proven Fermat's famously unproven polygonal number conjecture (yes, that's right, [[FermatsFermat's Last Theorem|he did it more than once]]) for n = 3; he later realized that the proof in his head needed significant ironing out, but for an open question, he got it quickly enough.
* According to Cognitive Psychology, when it comes to problem solving those "Eureka Moments" are actually called insights which are deep, useful understandings of the nature of a problem. However, compared to the typical slow approach to a problem solution, insights often occur abruptly and almost without warning. Tasks that involve insight usually require something new and non-obvious to be done and in most cases they are difficult enough to predict that the initial solution attempt will be unsuccessful. This can lead to the so called "AHA-experience" where the solution pops up all of a sudden.
* [[Merv Griffin]] came up with the name of his popular quiz show format ''[[Jeopardy!]]'' after a network exec told him that the show, piloted under the name ''That's the Question'', needed "more jeopardies".
* An Eureka Moment is what inspired [[J. K. Rowling]] to write the entire ''[[Harry Potter]]'' saga.{{context}} <!-- MOD: What kind of eureka moment, about what? -->
 
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