Regarding the eleventh link ‘birth’ or “jati”, a search of the internet will find the following definition: Quote jati - (Hinduism) a Hindu caste or distinctive social group of which there are thousands throughout India; a special characteristic is often the exclusive occupation of its male members (such as barber or potter) Such a definition is not exclusive to Hinduism or foreign to Buddhism. I would speculate this meaning of ‘jati’ was the common meaning of the term in the culture of the Buddha and the meaning he intended to impart.