15+ Tiny Human Accidents That Had The Largest Impacts In History

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Emma Saven
Aug 26, 2025 11:00 AM EDT

Have you ever heard of the Domino Effect? It's Geek Universe, of course, you have! Those small, defining moments that lead to some of the biggest events in history…like taking one wrong turn, or having your candy bar melt in your pocket…Suddenly, you're changing the course of history for better and for worse.

I often think about discovery, and how many of the most iconic discoveries didn't necessarily have any pre-thought or intent behind them. Someone probably just tripped, swerved, or sat under an apple tree at the right exact moment and boom…Gravity was born! That's the thing about life, we never truly know what's next…neither did the cavemen who decided to rub two wooden sticks together, but I'm pretty sure they felt pretty accomplished after doing so. 

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  • So yes, I guess you could say life is just one big game of dominoes, we have winners and we have losers, those who contribute to the way of life, and those who take away from it…but at the end of the day, the craziest thing about it all is that, the discoveries were there all along, they were just waiting for someone to find them…and in other cases, should have been kept hidden! 

    Here are 15+ small human accidents that led to some of the biggest discoveries and events in history!

  • 01

    What is the smallest human accident that had the largest impact in history?

    GuiltyAccident6288 The discovery of X-rays. Wilhelm Röntgen noticed a screen glowing by accident while experimenting with cathode rays, and realized he was looking at something totally new.
    via GuiltyAccident6288
  • 02
    Any-Factor-1697 A small bakery accident in Thomas Farriner's shop (possibly just an unattended oven or candle) set off the Great Fire of London. It destroyed most of the medieval city, but weirdly led to a better- planned modern London afterward. One baker forgot to blow out a flame... goodbye, London.
    via Any-Factor-1697
  • 03
    JeffurryS In 1945, Percy Spencer was standing near a magnetron and the candy bar in his pocket started to melt. Now we can all have cold food in hot bowls as a result.
    via JeffurryS
  • 04
    GuntertheFloppsyGoat An East German official was meant to say they were easing travel restrictions over time, he accidentally said they were easing them immediately and the Berlin Wall was mobbed by joyful people becoming one of the major events of German reunification and helping trigger / precipitate other end of the Cold war events.
    via GuntertheFloppsyGoat
  • 05
    Rough_Champion7852 Small fry but Nintendo ask Sony to develop a cd drive for their SNES. Nintendo pull out but Sony think, we've just so far, let's tidy it up and release it. Hence, the PlayStation one. Without Nintendo's invitation, Sony would not be in the video game business.
    via Rough_Champion7852
  • 06
    astarisaslave Janet Jackson's wardrobe malfunction at the 2004 NFL halftime show had a huge part in the the creation of Youtube. The founders were frustrated at not being able for the video online so they decided to create their own video sharing site. A lot of modern culture stems from Youtube, from the
    via astarisaslave
  • 07
    influencer/content creator culture to our consumption of video content on social media to how studios and record labels sell their wares. Even Facebook timed their release a few days after the incident to capitalize on its publicity using the site.
    via astarisaslave
  • 08
    Yan-e-toe Charlie biting his brother's finger. Internet would've been closed by now had that not happened
    via Yan-e-toe
  • 09
    Redqueenhypo Attenuated virus vaccines. A guy left a culture of chicken cholera virus in broth for a long time bc he forgot about it and went "what if I inject this into a chicken?" Result: very weak illness and subsequent full immunity
    via Redqueenhypo
  • 10
    West_Put2548 when some proto- human cave dweller thought 'I wonder what will happen if I rub these two sticks together vigorously?'
    via West_Put2548
  • 11
    Doc-Brown 1911 One wrong direction started world war I
    via Doc-Brown 1911
  • 12
    alwaysonesteptoofar Probably tossing discarded seeds into a spot where they would sprout, not get buried by more trash, and then being found later on when in full growth by someone who could recognize that they could grow their food on purpose.
    via alwaysonesteptoofar
  • 13
    callmeKiki1 A scientist was in a rush to go on vacation and did not put up his Petri dishes. When he returned a fungus had invaded the dishes and had k led off the bacteria that had been in them. From their fungus Dr Fleming was able to develop Penicillin. This saved over 500 million lives to date.
    via callmeKiki1
  • 14
    CapDry4822 Frank Epperson leaving his soda outside in the cold winter night and creating the first popsicle
    via CapDry4822
  • 15
    AntiqueYesterday2009 The fact that Air Conditioning was invented to control humidity in a printing factory.
    via AntiqueYesterday2009
  • 16
    gnome_ole The collision between chocolate and peanut butter resulting in the PB cups has brought the most joy to us.
    via gnome_ole
  • 17
    TheArcticOrca An Apple falling on Isaac Newton's head
    via TheArcticOrca
  • 18
    Iluciferusllamas Well, you see, one day in 2019 a guy accidentally punctured his containment suit at his job in Wuhan.....
    via Iluciferusllamas

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defining history books geek universe geeky history discovery moments life hacks life changing famous events choices well-known accidents science inventions
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