Social reality is a driving force behind human culture. It’s perfectly plausible for emotion concepts, as elements of social reality, to be learned from others during infancy, or even much later when someone moves from one culture to another (more on this shortly). Social reality is therefore one conduit for transmitting behaviors, preferences, and meanings from ancestors to descendants via natural selection. Concepts are not merely a social veneer on top of biology. They are a biological reality that is wired into your brain by culture. People who live in cultures with certain concepts, or more diverse concepts, may be more fit to reproduce.