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Accidental Discovery

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Sometimes, accidents happen. But then there are times when a coincidence is just enough to create a scientific breakthrough, an amazing invention, an unprecedented discovery, or something else that's actually benefiting society.
It's a popular trope in comedy. A clumsy professor falls, drops something, or makes a mistake, causing an unexpected discovery to occur. Just as often it's his bumbling assistant. Or just one of the protagonists, usually the stupid one. In some cases, this accident turns out bad and causes a Freak Lab Accident. But in this case, it actually turns out for the better! Another great scientific leap has been made and all due to something that seemed to be a mistake or an unintentional event.
This page is only for accidents that result in major discoveries or inventions in the field of science. For the cultural equivalent, see Accidental Art. Compare "Eureka!" Moment, Luck-Based Search Technique, Miraculous Malfunction, and Achievements in Ignorance.
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His jerky movements due to his legs being in braces inspired Elvis Presley to invent his famous 'hip shaking'.
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The Simpsons:
In "Flaming Moe's", Homer discovers the "Flaming Homer" after accidentally adding Krusty-brand cough syrup to a hastily-made cocktail, and discovers "fire made it taste good" after ashes from his sister-in-law's cigarette fell into it.
"The Genesis Tub", a segment from Treehouse of Horror VII, had Lisa accidentally creating miniature life-forms by putting one of her teeth into a glass of cola.
It's implied Bart helped contribute by accidentally zapping it with static electricity.
Another Treehouse of Horror segment had Homer accidentally invent a time machine whilst trying to repair a toaster.
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Asteroid in Love: In Chapter 2, Mira collects several stones from the riverbank. Mira accidentally breaks one of the rocks (a mudstone) to reveal a fossil, much to the excitement of Mikage, the local geology nut.
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Tamagotchi: In the series, Professor Banzo discovered the Tamagotchi species of alien by pure chance while he was sulking on a bridge over a date going badly. A Tamagotchi UFO crashed into the river, and the Professor and his assistant Mikachu, who was there to help him cheer up, went to save the creatures from drowning. They then discovered that the aliens couldn't breathe in Earth's atmosphere, so they created little eggshell-like devices to keep them alive; since then, the two have been researching the Tamagotchis, going as far as to visit their planet in their studies.
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In Real Genius, Chris has been working on a laser project (which, though he doesn't know it yet, his professor Dr. Hathaway is planning to turn over to the military). When Kent, his Sitcom Arch-Nemesis, sabotages the final version of the test, Chris becomes so upset he knocks things out of his freezer and slumps down onto the floor. Then he sees the tube of liquid nitrogen he's been keeping in the freezer and realizes he can rework the laser with that. Chris then rushes off to find his lab partner, Mitch, and together, they're able to finish the laser project.
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The Twilight Zone (1985): In "The Hunters", a young boy named Steve is walking through a field when he steps on an area of soft ground and falls through the earth. In the process, he discovers a prehistoric cave that has been undisturbed for 12,000 years. Dr. Klein later describes it as one of the most important archaeological discoveries of the century.
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The Irregular at Magic High School:
The Yoshida clan know (from old records) that something called the "Crystal Eyes" is necessary to summon the god of oceans safely, but they don't know what the Eyes are. For about two hundred years, clan members searched through artifacts and Ancient Magician lore, and found nothing...until one of their heirs attended a school of modern magic, for his own reasons, and found that one of his classmates could see spirits.
Because MI (mental interference) magic is relatively new, the Yotsuba were unpleasantly surprised to find out that the power of a pregnant MI magician can influence her baby. So if an MI magician (or even just her twin) is feeling particularly vengeful through the fetus' development, the child born might be a Person of Mass Destruction. Oops.
The USNA government were ripping open a miniature black hole For Science! when the alien species that would later be called "the Parasites" came through it and started brainwashing everybody.
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The Inexplicable Adventures of Bob!: Jean getting her lab experiment accidentally mixed up with Bob's jar of peanut butter in a Crash-Into Hello is what results in the creation of Molly the Peanut Butter Monster. This decidedly qualifies as a discovery because the event is replicable: a second creation of the mix by Jean's boss Dean Martin (without the knowledge of either Bob or Jean) duly results in another "monster", Galatea.
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The Expanse: Solomon Epstein tinkered with a fusion drive in the hopes of making his private spacecraft more fuel efficient; he is killed when it turns out the device is much more powerful than he anticipated and the resultant g-forces render him unable to reach the control panel to turn it off. The discovery makes interplanetary travel common by reducing the amount of time required to weeks rather than years.
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4chan (of course) accidentally made a major breakthrough in a decades-old mathematical formula when an anonymous user posted his proof on /sci/. What was the proof for, you might ask? He was trying to figure out the shortest possible amount of time it would take to watch the first 14 episodes of Haruhi Suzumiya in every possible permutation, or what is the shortest superpermutation of 14 symbols. Mathematicians had found an equation for calculating the shortest possible length of superpermutation, but it wouldn't give the correct answer for superpermutations with greater than 5 symbols. The anonymous poster found and proved that a new equation that they found would give a much closer result for higher numbers.
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Ascendance of a Bookworm:
Myne finds out that trombe seeds are actually mana-altered taue fruits simply from picking a taue fruit for the first time and seeing it absorb her mana. It's implied that this was unknown before because commoners don't have the mana needed to change taue fruits into trombe seeds, while nobles don't participate in the yearly festival that involves handling taue fruits. The discovery is important because her best paper is made with young trombe branches and the only safe way to harvest them entails cutting them down as soon as they start growing.
The creation of the setting's first Talking Weapon happens that way. Rozemyne donates her mana to a manablade while thinking of giving it an attribute she associates with Ferdinand. When donating mana to a manablade turns out to be a more delicate operation than she realized, Ferdinand is called over to make sure she didn't mess things up and uses his own mana to examine it. The combination of Rozemyne and Ferdinand's contributions results in a weapon that speaks with Ferdinand's voice.
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Drive (Dave Kellett): Senior Adviser Cuddow describes the greatest breakthrough made by his people, the Fillipods, in the war against the Vinn (an artificial form of The Virus), as a silly, accidental invention.
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Star Wars: The Old Republic: In the Sith Inquisitor storyline, Lord Ergast originally discovered the "Force Walk", a ritual to bind Force ghosts for use as sources of power, while attempting to recreate the ritual that Tulak Hord used to devour the spirits of his enemies at Yn and Chabosh—not realizing that it was the Inquisitor's Monstrous Humanoid companion Khem Val who actually did the devouring.
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Steins;Gate: The greatest inventions our teenage wannabe Mad Scientist has come up with include a camera attached to a toy helicopter and a toy lightsaber made of a glowstick and a handle. Then, when trying to create a remotely-operated microwave, he and his friends create a functional time machine.
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Primer: The film starts with a group of nerds making computer parts out of their garage until deciding to try making a better cooling system for refrigerators. In the process, they accidentally build an anti-gravity device which then leads to accidentally discovering it can be used for time travel.
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Tunnel in the Sky: Dr. Ramsbotham, inventor of the portals that enable instantaneous interstellar travel, was actually trying to build a time machine rather than a teleportation device. On his first successful test, he saw a jungle through the portal and, assuming he'd succeeded in reaching prehistoric times, armed himself and went through. He was immediately arrested for waving a firearm in a botanical garden a continent away.
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Up the Chastity Belt: While attempting to cure Sir Coward's intoxication, Lurkalot mixes a medicine consisting of sulphur and charcoal, which then has saltpeter knocked into when he is not looking. When he tosses the resulting concoction onto the brazier, it explodes. Realising he has invented something significant, he names it 'gone powder' because it makes things 'gone'.
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Reign of the Seven Spellblades: The underlying principle of the Second Spellblade, "Creumbra, the self-racing shadow", was discovered by accident when a mage tried to create a Doppelgänger of himself and caused a Reality-Breaking Paradox that blew up both him and everything for several miles around. Other mages copied his research and managed to reproduce the effect at a controllable level, resulting in an Unblockable Attack that disintegrates the opponent.
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Forrest Gump: Forrest does this several times, though he never takes advantage of this himself.
His jerky movements due to his legs being in braces inspired Elvis Presley to invent his famous 'hip shaking'.
He unknowingly helps two advert men think up the "Smiley" and "Shit happens" bumper stickers.
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Nero: One story has boy genius Adhemar discover a miracle cure, but not any disease that would make it useful.
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Legion of Super-Heroes: Bouncing Boy got his powers this way. When he was a pre-teen, he worked as an errand boy for a Ditzy Genius scientist and was told to deliver a new formula. On the way, he went to a sports arena to watch fighting robot gladiators, bought a soft drink, mistook it for the formula, and drank the formula by accident. (Unfortunately, he then proceeded to accidentally bounce onto the field, disrupting the event.)
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The Powerpuff Girls: "Sugar, spice, and everything nice... these were the ingredients chosen to create the perfect little girls. But Professor Utonium accidentally added an extra ingredient to the concoction... Chemical X! Thus, the Powerpuff Girls were born!"
The episode "Oops, I Did It Again" has the Professor realizing that all his successful creations were accidental, and he ends up having a dream of what would be if the girls were created on purpose and as planned.
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Doctor Who: In the story "The Green Death", Jo accidentally knocks over a jar of powdered fungus, spilling the contents onto some slides containing samples of tissue infected by a toxin carried by the giant maggots which feature prominently in the story. At first, Cliff Jones (a Nobel Prize-winning scientist turned eco-warrior with whom Jo has fallen in love) is annoyed that his work has been ruined, but when he looks at the slides later, he discovers that the tissue that was exposed to the fungus has died and realises that the fungus can cure the infection.
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Embassytown: The alien Arieki have a unique language that can only be reproduced by two mouths speaking simultaneously. It is said that this was discovered when human settlers on the planet Arieka tried unsuccessfully to communicate with them; when the humans grew frustrated and started talking over each other, their words happened to overlap and the Arieki finally understood them. However, it is also mentioned that this might just be an urban legend.
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A Game for the Fool: Due to being barely taught the very basics of cultivation when his parents died, Wei Wuxian unintentionally devises a powerful cultivation method based on the little information he knew about the original canon combined with the Video Game Mechanics of the System. It isn’t until Lotus Pier that he learns that he is ahead of most of his age mates and becomes the youngest person to have a Golden Core at age 10.
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Portal: According to logs in the second game, the Portal Gun started out as an attempt at creating a shower curtain. That's about as much sense as anything having to do with Aperture founder Cave Johnson ever makes.
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Flubber:
Dr. Brainard admits that he invented his artificially intelligent robot sidekick Weebo by accident and that even today he has no idea how Weebo achieved true intelligence and free will. Turns out Weebo had been doing research into her creation on her own, and managed to come up with a design that allowed Brainard to create a second intelligent robot.
Flubber itself was invented by accident. Brainard was trying to come up with a new kind of energy reactor and instead got an (apparently alive) substance that can apparently increase its kinetic energy after bouncing off a surface.
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Star Control II: This is where the Thraddash got their patented Ree-unk Afterburner. Ree-unk was a mechanic working on a starship engine when he accidentally tossed his cigar into the fuel exhaust. He did not survive, but the resulting blast of fire and burst of speed greatly impressed those watching.
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Heaven's Design Team: The designers often come up with many of the useful biological and physiological functions for their animals by throwing in random features on their project and finding a breakthrough here and there.
A lot of the unique behaviours of the sea otter (such as swimming on their backs, wrapping themselves in kelp while sleeping to keep from drifting away (and holding hands with each other when there is no kelp), using rocks to break shells to eat their food, etc.) aren't actually added by the designers, but springs from the creature's own adaptive capabilities as a poor swimmer that has developed a taste for seafood thanks to Jupiter feeding it urchins, lobster, and the like during lunch.
When Jupiter and Neptune get into a design battle to develop the penguin, many of Jupiter's suggestions are just him doing the exact opposite of Neptune, but a lot of the features he come up with (such as the penguin's barbed tongue, its ability to thermoregulate, and using snot to excrete salt water after swimming) proves to be more feasible than Neptune's suggestions.
When given a request for "an animal that ages in reverse", and discussing the possible effects of reverse aging on the sustainability of the species as a whole, Saturn uses Mars's reverse-time accelerator on a horse and reverts it into its cell division phase to see if it can grow back into a horse. The reverted organism grows into a jellyfish-like blob because the cell's division is unable to replicate the horse's complex design. The team decides to use the jellyfish base to create something that would fulfill the client's order instead, since it's easy to form and has a lot of predators that would prevent its population from spiralling out of control. The result is the Turritopsis nutricula.
In Chapter 35, Pluto is helping the Plant Department to design a "carnivorous plant that eats something other than insects". She gets stuck with the project until Mercury and Jupiter's own "useless animal" project uses her plant prototype as a toilet, inspiring the trio to create a symbiotic relationship where the "useless" animal is beneficial to a poop-eating plant by being so lazy it simply craps into the plant it's eating off of.
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Harry Potter and the Half-Blood Prince: The Weasley twins thought it would be a great joke shop product if they enchanted a hat with a shield charm so that they could trick their friends into jinxing them and have a laugh as it backfires. It wasn't until the Ministry of Magic, who's in the middle of a war, ordered 500 of them for their staff to wear that the two realized they had just invented wizard body armor, by accident, as a joke. This swiftly caused them to ditch the prank angle and just flat-out sell the hats (among other items like cloaks and gloves) as protective gear.
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The following is a list of statements referring to the current page from other pages.

 Accidental Discovery
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Comedy Tropes
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Tropes on Science and Unscience
 Patlabor: The Movie / int_66fd8a51
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
 Harry Potter and the Artificer Legacy (Fanfic) / int_66fd8a51
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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Accidental Discovery
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type
Accidental Discovery
 Tunnel in the Sky / int_66fd8a51
type
Accidental Discovery
 Heaven's Design Team (Manga) / int_66fd8a51
type
Accidental Discovery
 The Rise of the Unemployed Wise Man (Manga) / int_66fd8a51
type
Accidental Discovery
 What's Going On? (Music) / int_66fd8a51
type
Accidental Discovery
 The Stan Freberg Show (Radio) / int_66fd8a51
type
Accidental Discovery
 Fortitude / int_66fd8a51
type
Accidental Discovery
 The Dark Crystal: Age of Resistance / int_66fd8a51
type
Accidental Discovery
 Blightfall (Video Game) / int_66fd8a51
type
Accidental Discovery
 Loop Hero (Video Game) / int_66fd8a51
type
Accidental Discovery
 Kindred Spirits on the Roof (Visual Novel) / int_66fd8a51
type
Accidental Discovery