This criterion is critical. It points out how human norms and conventions differ through the ritualised behaviours located in nonhuman primates. Various authors have explained feasible iconographical influences from Mesopotamia to the Indus Valley.[ninety eight] Gregory Possehl notes "Mesopotamian themes in Indus iconography", especially layouts relevant to the Gilgamesh epic, https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf