This criterion is crucial. It points out how human norms and conventions vary within the ritualised behaviours present in nonhuman primates. Numerous authors have described achievable iconographical influences from Mesopotamia on the Indus Valley.[ninety eight] Gregory Possehl notes "Mesopotamian themes in Indus iconography", specially layouts related to the Gilgamesh epic, https://wearethelist.com/story20303713/not-known-facts-about-art-nouveau-beadwork