Naming chaos in statistics: bring order by thinking in mathematical models
Ever got confused by difference between the two GLMs? With why ANCOVA and GLM do the same thing? Ever had trouble remembering assumptions? Stop thinking in tests and start thinking in mathematical models, and everything will be much clearer.
Why guitar frets work (and why violins don't have them)
Obviously, you squeeze the string to the fret, which shortens the string making a higher sound. But it occurred to me, that it’s awfully convenient that you need one in the same place for all the strings. And if it’s so awfully convenient, how come violinist put up with having to find the exact place to hold the strings, rather then getting frets?