I've been reading up on stuff and found that, in the old days, they didn't have computers. And therefore, the mathematicians and physicists of the world needed some help. So, until the computers were easy to get, they used a slide rule. It's like those tables we used in Stats class except they're printed really small on plastic instead of in the back of a big book.

If you want to learn how to do it the hard way, you can invest in a slide rule too! Apparently these things are the real deal because they were put in their boxes almost 50 years ago. Now that's an antique!

I remember one year that Mr. Jehring and Mr. Hall were offering the relic "Slide Rule of Antioch" if you won the chess tournament, but I sure as heck didn't win.