When NASA began the launch of astronauts into space, they found out that the pens wouldn't work at zero gravity. (Ink won't flow down to the writing surface) In order to solve this problem, they hired a Consulting Firm.
It took them one deca...de and 12 million dollars. They developed a pen that worked at zero gravity, upside down, under water, in practically any surface including crystal and in a temperature range from below freezing to over 300 degrees C.
The Russians used a pencil...
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