Comment by bentley

> I missed my slipstick. Dad says that anyone who can’t use a slide rule is a cultural illiterate and should not be allowed to vote. Mine is a beauty—a K&E 20″ Log‐log Duplex Decitrig. Dad surprised me with it after I mastered a ten-inch polyphase. We ate potato soup that week—but Dad says you should always budget luxuries first. I knew where it was. Home on my desk.

Robert A. Heinlein, Have Space Suit—Will Travel (1958)