“This is an unusual paragraph. I’m curious how quickly you can find out what is so unusual about it. It looks so plain you would think nothing was wrong with it. In fact, nothing is wrong with it! It is unusual though. Study it, and think about it, but you still may not find anything odd. But if you work at it a bit, you might find out what it is.”
Classic Lateral Thinking Exercises, Top 100 Riddles of All Times, 2006.
“What is the beginning of eternity
The end of time and space,
The beginning of every end,
And the end of every place?”
What is the most commonly used letter in the English alphabet?