And Yet, In Each Human Coupling, A Thousand Million Sperm Vie For A Single Egg. Multiply Those Odds By Countless Generations, Against The Odds Of Your Ancestors Being Alive; Meeting; Siring This Precise Son; That Exact Daughter... Until Your Mother Loves A Man She Has Every Reason To Hate, And Of That Union, Of The Thousand Million Children Competing For Fertilization, It Was You, Only You, That Emerged. To Distill So Specific A Form From That Chaos Of Improbability, Like Turning Air To Gold... That Is The Crowning Unlikelihood. The Thermodynamic Miracle.