The only thing that's constant there is other people

This is part of the model that we’ve developed called the social baseline model. When you average everything out that humans have experienced, over millennia, the only thing that’s constant is other humans. We’re so adaptable, we’ve been to so many places; we live in the arctic and the equator. We eat whale blubber and unrefined grains. We’ve been to the moon and practically at the bottom of the ocean. The only thing that’s constant there is other people.

— Jim Coan, 2019

From the interview This View of Life: Completing the Darwinian Revolution