ABSTRACT
The sensory fields from which our minds acquire information vary with when we arrive in the world, where our birth takes place, and the people with whom we interact, in which ways, and at what age. People exposed to different sensory fields necessarily evolve different ways of thinking about the world and acting in it. Because new cultural things come into being all the time to create differences in the sensory fields of the people we live with, cultural differences grow over time in the presence of barriers of distance, time, or behavior. As distance grows, the sensory fields that contribute to new cultural things become increasingly different, and language intelligibility shrinks. The ways in which our brains store and process information in sensory fields means that individually unique life trajectories yield individually unique people whose choices direct the course of their lives. Critically important sensory input comes to us in the form of other people's behavior.
