Much like Yagharek, humans also went through a gothic moment where they lost the potential for flight. Sometimes we can feel this through the longing in our shoulders. It became palpable to me as I read about Yagharek's dilemma. When the feeling is strong, I can even feel a haunting of the presence of wings as an invitation to a series of new events in my day-to-dat life. We also know this as an outcome of the developmental pathways of others. Variations sometimes occur during the development of animals that shift or exchange the expression of limbs or wings. Our limbs are not the assured developmental outcomes that we often take them to be.
Read here about the Gothic and biology.
Read here about the role of variation in development.
Read here about the intertwining of popular culture and biology.