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What is the most important invention ever made in human history?


I know that there are lots of great inventions in this world. These inventions are the products of the great minds of scientists and researchers. In your own viewpoint, what do you think is the most important invention ever made by human? Why do you consider it important, and how did this invention affect our lives today? I was asked with the same question way back in college (during an interview). Well, I am just so excited to know your opinions/answers on this matter - the reason why I posted this question here.

 

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Best Answer Attikos says

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Beth Perry (bethperry) says

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Mahfoudh Muhammed Bouboutt (Mahfoudh Muhammed) says

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