Archaeologists and scholars usually assume that most things that existed prior to before 70 CE probably have relevance for understanding the world of Jesus, while most things that came into existence thereafter probably do not. Accordingly, it is important to date the remains of Sepphoris that existed prior to 70 CE before drawing conclusions about what this city might tell us about Jesus and his world. Archaeologists of the land of Israel can usually find the 70 CE layer in the excavation cake because