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What was the best invention of the 20th Century???

Nikki's comment account:

computers, think about how much more work gets done with the aid of computers now.


Sometimes less gets done.... funny eh?
Good A Though, and congrats on the Best As!!!




Good Invention, wrong Century:
1806: Swiss engineer Fran├žois Isaac de Rivaz built an internal combustion engine powered by a mixture of hydrogen and oxygen.


Cellular mobile phone


Were they still good when they were as big as a brick??
Good A!!!


The airplane.


Good A!!!

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