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Without a calculator ? ! ? Are you aware that there were no calculators until just a few years before
people landed on the moon ?

Once upon a time, little kids used to learn how to add up numbers; the sharp ones could do it in their heads.
Going way back, anybody with a pencil and a flat piece of rock could have added 100 numbers.

The story you may be thinking of concerns the German mathematician Gauss, who supposedly added 1 - 100
in his head when he was 5 years old.

The big deal wasn't the addition. They had real schools in Germany at the time, and most 5-year-old German kids
could do that. The big deal was the easy shortcut that Gauss came up with.

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15y ago

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