Here is a sentence from Strunk & White’s The Elements of Style, 76–77 (4th ed. 2000):
Do not be tempted by a twenty-dollar word when there is a ten-center handy, ready and able.
The problem: in the same book, page 2, the authors advise writers, “In a series of three or more terms with a single conjunction, use a comma after each term except the last.” Following their own advice, the authors should have put a comma after “ready.”
If the authors were alive today, they might quote Ralph Waldo Emerson: “A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines.” Or they might shrug their shoulders and say, “Typos happen.”
Hat tip to my colleague Louis LaCour for spotting this.