Always winter. Never Christmas. That's how C.S. Lewis describes the reign of Narnia's evil White Witch. Not a bad metaphor to express the agony of expectation in the concrete language of childhood. Mathematics offers another language for describing the torment of waiting.
Imagine you're five. You'll spend one-sixth of your life waiting for your next birthday. But the life percentage for a fifty-year old is much, much smaller. Thus, grandparents bemoan the brevity of life while twelve-year olds can hardly wait to get a driver's license. This offers professors [frequently-untapped] leverage during class discussions.












