You know how people all cram to get onto an airplane, standing in that long line that stretches from the back to the front of the jet as grandma hobbles into her seat, the young buff guy crams his overpacked athletic bag into the overhead compartment and moms and dads struggle to quiet their infants once they’ve located their spots? I’m really curious what would happen if the person at the back of the line pushed the person in front of her over … Dominoes?