Have it both ways

When we use "no" at the start of a sentence to mean "yes," as you won't be able to stop hearing once you start listening for it, we're employing no as a Janus word

If you need any evidence that English is a beautifully baffling language (in case you're prosecuting it for inscrutability), consider the many words that are also antonyms for themselves

"Cleave" has always struck me as the finest example of this phenomenon, meaning both to cut in two and to adhere together. "Dust" can mean either to clean or to sprinkle with dust. Only context provides the definition.