RE: What invention changed the world in the year you were born?

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vcelier (75)in #science • 8 years ago

BTW, I was born in 1949, and for me the biggest invention of 1949 that is still in use today is the barcode.

8 years ago in #science by vcelier (75)

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michelle.gent (75) 8 years ago

I wonder how many combinations of those lines there are?

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