Part 4 of the TED Radio Hour episode Spoken And Unspoken.
About Mark Forsyth's TEDTalk
Etymologist Mark Forsyth shares the surprising back story on the term "president."
About Mark Forsyth
Mark Forsyth is an author, blogger, journalist, proofreader and ghostwriter. On his blog, the Inky Fool, he dispells grammar myths. His book The Etymologicon takes "a circular stroll through the hidden connections of the English language" by history of one word or phrase with each chapter.