Witty or Wise?

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not wok in zero gravity.

To combat this,  NASA scientists spent a decade and $12 billion to invent a pen that writes in zero gravity, upside down, underwater and on almost any surface including glass and at temperature ranging from below freezing point to 300 degrees celcius.

Whereas the Russians used a pencil.

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