" However, the rest of nature doesn't work like that. A bluefin tuna can release
10 million fertilized eggs in a spawning season. Perhaps 10 of them will hatch and make it to adulthood. A million die for every one that survives.
But there's good reason for it. Nature wastes life in search of better life. It mutates DNA, creating failure after failure, in the hope that some new sequence will eventually outcompete those that came before and the species will evolve. In other words, nature tests its creations by killing most of them quickly—the battle "
red in tooth and claw" that determines reproductive advantage."