"know how to use a slide rule" is something of an inside joke to those of us who know how to use a slide rule. There's know how to use a slide rule. There's Know How To Use A Slide Rule and There's KNOW HOW TO USE A SLIDE RULE inter alia
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I'm at the first level ... at best
End of conversation
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If I had to guess I would have assumed not cause that old but because it's cool old tech. But now I've got a good easter egg to look for in Books 3/4, thanks!
Thanks. Twitter will use this to make your timeline better. UndoUndo
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