This episode is our first in a six-part series called "What Greek Myth Is...And Is Not." In this initial look, we consider what the content of myth is, what we mean by "myth," and how flexible it is in the hands of storytellers. We also consider how the mythical period differed conceptually from what might be called the "historical period," as well as a brief tutorial on how AD/BC (or CE/BCE) works in terms of time reckoning.