It's not just decision making deadlock that receives a benefit. The survival of my offspring is often dependent on them expressing strategic diversity from one

It's not just decision making deadlock that receives a benefit. The survival of my offspring is often dependent on them expressing strategic diversity from one another. The only feature that you share in common with your ancestors who survived snowball earth is the uncertainty of inheritance through mutation. If uncertainty is adaptive, it makes sense that it would also be encoded into the genome.