This criterion is vital. It explains how human norms and conventions vary with the ritualised behaviours located in nonhuman primates. A variety of authors have explained probable iconographical influences from Mesopotamia to the Indus Valley.[98] Gregory Possehl notes "Mesopotamian themes in Indus iconography", especially patterns connected with the Gilgamesh epic, https://history-of-beads02333.ka-blogs.com/84440017/the-basic-principles-of-art-nouveau-beadwork