We consciously decide whether to consider people; we fall in love despite ourselves; we entirely fail to fall in love with people who fall in love wi… - Matt Ridley

TP53 seems to encode the greater good, like a suicide pill in the mouth of a soldier that dissolves only when it detects evidence that he is about to mutiny.

They may direct the construction of the body and brain in the womb, but then they set about dismantling and rebuilding what they have made almost at once — in response to experience.

We give boys tractors and girls dolls. We are reinforcing the stereotypical obsessions that they already have, but we are not creating them.
This is something every parent knows. Despairingly they watch their son turns every stick into a sword or gun, while their daughter cuddles even the most inanimate object as if it were a doll.