Sublime

If evolution chanced upon a way to bind people together into large groups, the most obvious glue is oxytocin, a hormone and neurotransmitter produced by the hypothalamus. Oxytocin is widely used among vertebrates to prepare females for motherhood. In mammals it causes uterine contractions and milk letdown, as well as a powerful motivation to touch

Human social relations are based on habits of reciprocity, altruism, commerce, physical attraction, and procreation.

These data make a strong case that, as human social networks grow, they necessarily lead to systems that require fewer resources per person, and produce more per person. In other words, the benefits of scale for human groups have always been there.

Meanwhile, those who collaborated and bonded with others enjoyed increased safety, mating opportunities, and access to resources.

cues of commitment

people you know by name (1,500).

They appear to want some of the same things most of us want: recognition from their peers and communities and better lives for the people they care about. Being