“Your scientists were so preoccupied with whether or not they could, they didn’t stop to think if they should.” — Ian Malcolm, Jurassic Park.

I heard a story about a man on a train, who would deliberately sit opposite people with the same crossword. As the journey progressed he would laugh and make comments on clues, on the silent train.
Happy as Larry (where did that phrase originate?), he would fill in the crossword in record time.
When he left the train he would leave his crossword on his empty seat, then run out of the doors and peer at the complexed face of the person looking at his answers.
For the entire journey he had filled the crossword with gibberish.