1. The parent-of-a-young-toddler's nightmare
"You dream that you're asleep but suddenly awakened by your crying child. You think, 'Jesus, I can't even sleep in my dreams.' This strikes you as so profound that it wakes you up. You grope for a pen with which to write it down. The pen falls on the floor. You reach for it, fall out of bed, and the noise wakes your sleeping child."
2. The grandparent's nightmare
"You call your adult child to ask if his children have been letting him get any sleep, but no one answers — in fact, you