You Shouldn't Exist

This toy multiplies improbabilities. It starts with the cosmos itself: a universe whose constants landed in the one narrow window where atoms, stars and chemistry are possible at all. Then it narrows — the right star, the right distance, liquid water, a steadying moon, a magnetic shield. Then life igniting at all: dead chemistry crossing the line into something that copies itself, once, nearly four billion years ago.

Then come the survival filters. Five times life on Earth nearly ended, and every time your lineage was among the handful that made it through. Then a bloodline threading through a whole continent's worth of humanity to arrive, improbably, at your door. Then two specific people, out of everyone alive, crossing paths at the one moment that could ever make you. And finally the lottery of a single sperm and a single egg — you, and not any of the millions of siblings who could have taken your place.

Multiply it out and you get a number with more zeros than there are atoms in the observable universe. The exact figure is theatre. What survives the theatre is the vertigo: every ancestor, every coincidence, every near-extinction your line slipped through all had to land exactly as they did. Change one and someone else is reading this.