Expensive Pen !!

When NASA first started sending up astronauts, they quickly
discovered that ball-point pens would not work in zero gravity. To combat this problem, NASA scientists spent a decade and $12 billion developing a pen that writes in zero gravity, upside-down, on almost any surface including glass and
at temperatures ranging from below freezing to over 300 C.
The Russians used a pencil. Your taxes are due again–enjoy paying them

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