Hilariously Small changes, huge butterflies

Got an idea a while ago for timelines which diverge by huge amounts from our timeline based on seemingly tiny, irrelevant changes. These changes are usually boosted by the butterflies erasing people from existence. Do you have any timelines like this and if so what do they involve?

For mine a random Londoner pukes slightly to the left after drinking too much. The affects the path of a passing traveler which in turn radiates out in a domino like effect. This eventually reaches King Henry VII of England prior to him fathering any sons which erases King Henry VIII from existence. The effect? Britain is a staunchly Catholic nation, the Spanish are the dominant power in the world and are the majority in the Americas, Australia and New Zealand. The English have very little population outside Britain and its language is not very widespread.
 
This is one of those threads that works both post and pre-1900. Forgot where I was when I wrote

"Jerry Van Dyke takes the role of Gilligan on Gilligan's Island instead of going for the leading role on My Mother the Car, this of course leads to Nuclear Annihilation."

So for Pre-1900

In 1731 Gus Washington has a little bit too much to drink and can't follow through that evening with the Missus. He recovers fully the next night and 9 months later Georgia Washington is born!
 
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Yes, any teeny tiny PoD about people having sex can completely change the person being born 9 months later so if they’re important that can change history completely.
 
I don't know if this is such a tiny change but : Maria Theresa Ist of Habsburg is unfertile ? She had like 16 child if my memory is good ^^'
 
The alpha male of an ape tribe millions of years ago gets shit thrown into his eyes by a rival male and he falls from a tree to his death. The new alpha is unable to guide his group successfully and they are killed by rival apes. As a result, the last common ancestor of humans and chimpanzees has died.

Yuge butterflies. Homo Sapiens never evolves.
 
The alpha male of an ape tribe millions of years ago gets shit thrown into his eyes by a rival male and he falls from a tree to his death. The new alpha is unable to guide his group successfully and they are killed by rival apes. As a result, the last common ancestor of humans and chimpanzees has died.

Yuge butterflies. Homo Sapiens never evolves.
Well, not quite. There'll probably just be an different ape of that tribe as last common ancestor. These things often depend more on population than individuals.
 
Jack the Ripper can't rob Mary Ann Nichols of consciousness before attacking her when she has a coughing fit. Thus when he attacks her she screams and he is caught by a patrolman and some civilians. He goes down as another minor criminal and all the effort used in out time to discover his identity is used to better the world into a utopia.
 
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