IMO, it is the invention of the Wheel.
The wheel, invented around 3500 B.C., revolutionized transportation. It allowed humans to move goods more efficiently and paved the way for wheeled carts, facilitating agriculture, commerce, and long-distance travel.
Let's hear your opinions.
The greatest of all, imo, is the invention of language. Language is the greatest of all because it's the only thing that made human knowledge transferrable and portable.

Without language, won't we be similar to other species?

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And how about language, can it be considered an invention?
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Why not?
We obviously had it in us to invent language. Humans continue to consciously and deliberately invent languages. Math and music, for example. Computer languages and hypertext markup language.
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I agree
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If you put it that way, then yes. I agree!
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Came to comment exactly this.
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This one right here. Being able to pool knowledge among humans allowed everything else to happen.
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In my opinion electricity is the greatest invention.
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And why do you think so?
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Is electricity an invention ?
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circuits are the invention.
You know what they mean
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I think electricity is not an invention in the traditional sense, but rather a fundamental natural phenomenon that people learned how to use properly.
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I mean bulbs and batteries and many other equipment which run on electricity.
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WHEEL STEAM ENGINE TRANSISTOR

BITCOIN

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Cooking is underrated. Chimpanzees spend many hours a day just chewing. Cooking our food freed up a lot of time for other activities.
I read a pretty interesting book about this a while ago. It proposes that cooking our food helped the development of our large brains. It's definitely something that sets us apart from other animals.
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In our generation, it has to be bitcoin.
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Washing machine-cum-dryer
Any parent with young kids will attest to the awesomeness of this invention.
In fact, I need to fold my laundry now haha
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The more I write (or rather type), the more I'm beginning to understand how crucial for human evolution it has been to be able to write. Therefore, I'll go with any tools that have allowed us to write, and therefore, manifest our ideas into physical form, and keep a record of basically anything that comes to mind. So such a tool includes, a stone, to pen and paper, to typewriter, to computers and smartphones. Plus these same tools allow us to draw as well which has unlocked another part of our ever evolving brains.
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write, printing
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Harnessing the power of fire probably. While maybe the simplest invention, it had the most impact because no other invention would have been possible if humans starved, died from disease spread via eating rotting raw meat or froze to death.
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that wich enchants (wo)men into voluntary servitude - words
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