### Magic pencils

Writing about web page https://www.youtube.com/embed/IXNSavpJ3Bw

Statisticians learn to smile politely when people at parties roll out the so-called Mark Twain / Disraeli quote.

But the subject of statistics is like the magic pencils described in this charming story (less than 2.5 minutes); correct use will lead you to The Truth … .

The story is at the beginning of a full lecture on Youtube, and corresponds to Marie-Claire van Leunen's chapter 35 of Knuth, Donald E, Tracy L Larrabee, and Paul M Roberts. Mathematical Writing. Washington, D.C.: Mathematical Association of America, 1989.