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After NASA runs our object orbit projections,
the orb. scientists verify the same calcs with sliderules.

[foldspace]

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Spacex rocket pass yesterday;
and look up,
this will be a common sight!

[OldWarBaby]

Yup. I still have my Post Versalog right here in the desk drawer. In case the power goes out or the Web self destructs. While I didn’t work on the SR-71 I did indeed help build Nuke Subs using the same scribble paper and slippery stick.