You've probably heard of the ‘butterfly effect’ from the 2004 American sci-fi movie featuring young Ashton Kutcher. But the term stems from the branch of math called chaos theory and is actually associated with mathematician and meteorologist Edward Lorenz.
According to Lorenz, a tornado could be influenced by minor perturbations and a tiny change in the initial conditions would create a significantly different outcome. His ideas quickly spread among philosophers and mathematicians, but today, the whole concept of the butterfly effect is often used to describe a situation when a small change causes great consequences.
Like the decisions we make in life. So this time, we’re diving deep into real-life stories of the “butterfly effect” shared by people in this Reddit thread. Some of them are truly unbelievable, but hey, truth is stranger than fiction.

#21

At the end of 6th grade, my class took a field trip on a whale watch. That night, I saw a commercial for a documentary TV series on whales. Ever since that day, I wanted to grow up and protect whales from being hunted. Today I work in the military specializing in Marine Preservation.
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188points
#22
My desire for pizza set off a chain reaction that destroyed my family:
One day, I got home from school and really wanted pizza. My family was poor, so spontaneous food trips weren't always in the cards. I really worked my pouty face on my mom, and begged to go to the local pizza place for dinner. She actually went with it, so we went. While chilling there, I saw my uncle walk by, and I said, 'Uncle [insert name], is that you?!' Now, you might be thinking, 'He just wanted pizza, what's the big deal?'
WELL, he lived several states away, so to arbitrarily be in town and not tell anyone was strange.
Turned out he was having an affair with his sister-in-law (my aunt on the other side of the family). One thing led to another and now everyone hates each other, and we haven't had contact in like 20 years.
I just wanted some pizza
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185points
#23
A few years ago, I was on the phone with my boss as I was getting home. We were discussing what we needed to get done the next day when he asked, 'What the eff is that noise?!' I said it'd make more sense to just show him, so I took a video of me opening the door and feeding my (very loud) farm cats.
He wanted me to show the video to other people, but I realized I didn't like anyone crowding me awkwardly looking at my phone to show the video, so I uploaded it to YouTube. The next morning, I went to show someone on the computer, and noticed it was up to 11 views, which I found odd.
Then, it went viral.
Thousands of views per hour. I was getting constant calls and emails about buying the video rights and just asking for permission to use it. It took off again in the pandemic time and has been a nice little source of income when things have been rough.
All because I didn't like holding my phone to show people a 30 second video."
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180points
#24

I procrastinated one day in high school by watching a foreign musical on youtube. I ended up trying to learn the lyrics and eventually the language. That led me to discovering the field of linguistics, which I'm now majoring in. I don't know what I'd be doing now had I actually started doing my homework that day instead.
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174points
#25

Had a surprising and rough breakup and decided to treat myself to a vacation somewhere I'd always wanted to go. Well, I loved it there more than I expected, and six months later, I emigrated there.
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173points
#26

The wife and I were having dinner in Hawaii one night on vacation. As we were getting up to leave, I noticed she hadn’t finished her beer. I told her she should finish the beer since we paid some ridiculous price for it. Fast forward 30 seconds and we leave the restaurant and are walking the 3 blocks back to the hotel. About 50 feet in front of us as we’re walking (were walking down the sidewalk on the left side of the road), a car comes flying out of a side street from the right and crosses through the street, hops the sidewalk in front of us, and smashes into a wall. If she didn’t finish her beer, we would have been smoked by the car and most likely squished between the car and the wall. We always finish our beer now.
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163points
#27

I was going to carpool with my aunt to go to a family gathering. At the last minute, I decided to go by myself instead so that I could leave early if I wanted.
On the way there, my aunt drove off the road into a ditch. She was okay, but the passenger side of her car — where I likely would've been sitting — was totally smashed in
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160points
#28

Back in the 80s, my mom studied abroad in England. A couple days before her flight back home to the US, she got too homesick to wait any longer and spontaneously bought a ticket home early. The flight she was originally supposed to take was Pan Am flight 103, where all 243 passengers and 16 crew died. If not for her homesickness, her and my dad would not have met and my brother and I would not have been in existence.
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158points
#29
The other day, I was driving home from work. Traffic was light and I was behind a car with a license plate that started 'KFD.' It made me hungry, so I decided to duck through the KFC drive-thru for chippies with extra salt as a little treat to myself!
They took forever to bring them out and by the time they finally did (all told, about 10 minutes later), traffic had slowed to a complete halt.
I needed to get over a bridge that's normally six lanes, which had now been reduced to one. Turns out, it was due to a massive collision involving several cars. When I finally got to the point where I was driving past the accident, I noticed the license on one of the cars...it's the KFD plate.
If I hadn't stopped to get hot chips, I'm fairly sure I'd have been in a major collision. KFC chippies with extra salt saved my life.
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156points
#30

I'm alive because my aunt was born.
My grandfather was conscripted into the Romanian army as a medic, and his unit was one of the many acting as a defensive barrier, covering the Nazi supply lines to Stalingrad. She was born, and he was called back to Bucharest from the front. While he was on leave, the Russians launched Operation Uranus, which decimated the axis forces. He recieved word that his unit had been completely destroyed. He was never reassigned, and in 1948, my mother was born.
I'm also alive because a bunch of Romanian cows got sick. My other grandfather was a pharmacist, back when that meant actually making medicines, he was also a Jew. The town he lived in was largely agrarian, and their cow herds came down with some illness that was killing them. He whipped something up that cured them. The townspeople were very grateful to him. So grateful that when the chief of police heard that the Nazis were coming to town to take inventory of who lived there, he came to my grandfather's house with some train tickets for him and his wife. They escaped the Nazis, and never got caught. My father was born at the end of 1945.
I guess this is the opposite of the butterfly effect, really. Rather than one small action blowing up into a much more important chain of events, two hugely improbable events are eventually lead to my birth(and obviously my extended family as well)... and now, I run ads on the internet.
148points
#31
My wife got an email from her old colleagues the day we returned home from our honeymoon, asking if she wanted to star in a short film they were doing for fun. She said 'sure,' and asked if I wanted to come along, as she knew I had an interest in movies.
At the time, I worked in life insurance and was miserable, and filmmaking was more than an interest — I had always wanted to make films, but never made the right connections with people and didn’t know where to start.
I made friends with the producer of that short film my wife was in and, 11 years later, filmmaking and video production is my career. I’ve shot feature films, short films, video for TV and web all over the world because of that one email to my wife. Changed our lives!
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144points
#32

I chose to rearrange my sequence of classes slightly before starting my education. By doing this, I had to commute to a different branch of the school in a different town than the one I was originally signed up for.
On my first day there, I helped a girl who had, somehow, managed to break both of her arms in a drunken shopping cart accident. This girl, whom I would absolutely never have met had I not changed my classes around, is my wife of 14 years
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131points
#33
I was Very little and singing a song completely with made up words. My mom asked what it was, and I said Evelynese (my name is Evelyn). Then a year later I made up a fake country for that fake language (Evelyninis). Then I started making up some stories. Now it’s a little over a decade later, I’m in high school, and I have a whole fictional world with three political superpowers (that I won’t name for personal reasons, but just know Evelyninis has a better name now). This world has a very intricate map of ecosystems (and soon, political borders of various eras), five distinct cultural and ethnic groups so far, and some unique flora and fauna. Former Evelyninis specifically has twenty families of nobility, two hundred thirty seven common families, a religion, a specific type of domesticated big cat, the bones of a conlang, two epics in the works (the first being adapted from older stories I made up), and much more. I’m probably going to work on this until the day I die. All because toddler me wanted to throw some snark at my mom.
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125points
#34

Got arrested for growing weed, moved back home. Got first job I could at Ikea. After working there for over a year, randomly decided to check Craigslist for jobs and saw an opening at a cafe and they were hiring right then, so instinctively went for it.
The cafe was connected and owned by one of the most popular brewpubs/beer gardens in the area. They hired me to host there, quickly worked my way up the ranks to eventually bar manager. Met girl of my dreams, we are now married with 2 amazing kids. Opened two more restaurants with them and currently assistant director of operations, overseeing three restaurants @ 3, 5, and 8 million a year in sales!
Love my job, love my family, love my life. No idea what I'd be doing if I never got arrested, or never applied for the cafe job.
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118points
#35

Someone I know once had a flight planned to Spain. He ended up missing it because he was like one minute late. The plane ended up crashing... one minute literally saved his life
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117points
#36
I sent a friend from secondary school (who I had a huge crush on) a message just saying, 'Happy Birthday!' a couple years after we all left school. I did the whole 'We'll have to catch up soon!' thing, not expecting much.
He replied, 'How about Monday?' So I saw him that Monday for a coffee.
Next month is our six year anniversary.
It's truly the best thing that ever happened to me, and my friends joke that I'm the queen of escaping the friendzone.
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114points
#37

Getting my ears pierced the day after I graduated high school got me where I am today.
I worked at McDonald’s at the time and was scheduled to work that night. Before my shift, my girlfriend at the time convinced me to get my ears pierced. Well, when I showed up to my shift with these clear ear studs in, my manager gave me an option. Either take them out, or go home. Being only 17 and not taking anything seriously, I went home.
On my way home, I called that girlfriend’s dad, and asked if I could work with him laying tile. He gave me a chance, and I quit McDonald’s that day. Worked with him for about a year until the 08’/09’ recession caused us to run out of work. I got laid off.
4 months later, I land a job in a new hospital doing admitting in the emergency room. Did that for 2 years before I got my phlebotomy certification. Been doing that for a few years and now I’m in my final semester of nursing school.
I attribute everything I’ve done to that day my ex girlfriend pressured me into getting my ears pierced. Who knows how long I would have stayed at McDonald’s.
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108points
#38
I decided to try weed in high school. I met a dude through my weed connections, and we became roommates. My roommate talked me into trying World of Warcraft. I met a girl through WoW. Years later, I dated her. A year after that, I moved states and married her. We have kids now.
So, basically, my children are a direct result of weed.
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103points
#39

If my former roommate wasn't an alcoholic going thru withdrawal and had to be hospitalized, we'd have had enough money for rent. Then, I wouldn't have moved home. If I hadn't decided, while looking for a new job in my hometown, that it would be nice to have insurance, I'd have got another restaurant job instead of a manufacturing job. If I hadn't started that manufacturing job, I'd have never met a co-worker who was quitting for a much better job. Then, I wouldn't have also applied for a job with that company that was still hiring. I still work here 8 years later and hope to retire from here. It has its sh*tty days (or weeks), but the benefits are amazing and I'm making more than most college graduates.
78points
#40
In grad school I said f it and submitted a conference proposal the night before the deadline. Long story short, I basically have my job, my city, and my wife as a direct result of that decision.
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56points


