Many of today's grammar rules can be traced to the opinions of one 18th century writer.
Some imitative words are more surprising than others
A word that (literally) drives people nuts
They started as same word, but their meanings have drifted apart over time.
An old-fashioned rule we can no longer put up with.
Why don't they call it the Merriam-Webster comma?
We'll tell you all the perpendiculars