In high school, would be computer scientist Donald E. Knuth (later known as the "Father of Analysis of Algorithm), developed a Potrzebie System of Weights and Measures, after a running gag in Mad magazine. The basis of this revolutionary system, according to Knuth, is that 1 potrzebie is equal to the thickness of the Mad magazine issue #26 or 2.63348517438173216473 mm.

What, you don't believe that the Potrzebie System of Weights and Measurements is a valid system? Just ask Google - via The Presurfer